ARMY TM 9-1010-221-10

AIR FORCE TO 11W3-9-4-1

MARINE CORPS TM 07700B-10
NAVY SW370-AE-OPI-010
TECHNICAL MANUAL

OPERATOR'S MANUAL
GRENADE LAUNCHER, 40-MM: M203
(1010-00-179-6447)
GRENADE LAUNCHER, 40-MM: M203A1
(1010-01-434-9028)
HEADQUARTERS, DEPARTMENTS OF THE ARMY, AIR FORCE,
MARINE CORPS, AND NAVY
DISTRIBUTION STATEMENT A: Approved for public release; distribution is
unlimited.
1 AUGUST 2001
WARNING SUMMARY

Do not point muzzle in direction of personnel when loading, clearing, zeroing,

or firing grenade launcher as this will result in injury to, or death of,
personnel.

Do not carry weapon in open position. Weapon must be carried in a closed

and locked position with safety on.

Be sure safety is in safe position after loading grenade launcher.

Do not squeeze trigger and remove safety at the same time.

a
WARNING SUMMARY (Cont)
The grenade launcher could fire without squeezing the trigger if the sear does
not function properly.

When firing High Explosive (HE) grenades at targets within 165 meters (541
ft) (minimum safe), be in a protected position. Do not engage targets within
165 meter (541 ft) radius of unprotected friendly troops. The danger radius of
the practice grenade is 20 meters (66 ft).

Do not fire canopy smoke cartridges so that a falling ignited projectile could
descend upon friendly troops causing injury to personnel and/or damage to
materiel.

b
WARNING SUMMARY (Cont)
Do not use cartridges other than those authorized for the 40-mm grenade
launcher M203. Use of unauthorized high explosive 40-mm cartridges will
result in death or injury. Use only authorized rounds.

The danger radius of practice grenades is 20 meters (66 ft).

Projectiles assembled with M552 (T333) fuzes will arm within 3 meters (10 ft)
of weapon. Clear line of fire of all obstructions that will endanger personnel
when weapon is fired.

The M407A1 practice round fuze arms between 14 to 27 meters (46 to 89 ft).

Do not fire ammunition not made for use in the M203 grenade launcher.
Doing so will result in injury to, or death of, personnel.

c
WARNING SUMMARY (Cont)

Hearing protection is required for the user and all adjacent personnel on
firing range, when using M585 cartridge.

Non-lethal rounds for the 40-mm grenade launcher M203/M203A1 have the
potential to cause lethal injuries if operator instructions are not precisely
followed. Operator instructions for non-lethal rounds are over-packed in the
appropriate ammunition containers.

Before inspection, be sure weapon is NOT loaded.

FIRST AID

For additional first aid data, see FM 21-11.

d
LIST OF EFFECTIVE PAGES/WORK PACKAGES

NOTE: The portion of text affected by the changes is indicated by a vertical

line in the outer margins of the page. Changes to illustrations are
indicated by miniature pointing hands. Changes to wiring diagrams
are indicated by shaded areas.

Dates of issue for original and changed pages/work packages are:

Original ..................... 0 ............................ 1 August 2001

A
LIST OF EFFECTIVE PAGES/WORK PACKAGES (Cont)

TOTAL NUMBER OF PAGES FOR FRONT AND REAR MATTER IS 36 AND

TOTAL NUMBER OF WORK PACKAGES IS 38 CONSISTING OF THE
FOLLOWING:

Page/WP *Change Page/WP *Change

No. No. No. No.

Title ....................................... 0 xii blank ................................ 0

a - d ........................................ 0 WP 0001 00 - WP 0038 00 ... 0
A - B ...................................... 0 Index 1 - Index 13 ................ 0
i - xi ....................................... 0 Index 14 blank ..................... 0

*Zero in this column indicates an original page or work package.

B
TM 9-1010-221-10

HEADQUARTERS, DEPARTMENTS OF THE ARMY,

AIR FORCE, MARINE CORPS, AND NAVY
WASHINGTON, D.C., 1 August 2001

TECHNICAL MANUAL

OPERATOR'S MANUAL
GRENADE LAUNCHER, 40-MM: M203
(1010-00-179-6447)
GRENADE LAUNCHER, 40-MM: M203A1
(1010-01-434-9028)

This manual supersedes TM 9-1010-221-10, dated 17 December 1984,

including all changes.

i
REPORTING ERRORS AND RECOMMENDING IMPROVEMENTS

You can help improve this publication. If you find any mistakes or if you
know of a way to improve the procedures, please let us know. Submit your
DA Form 2028 (Recommended Changes to Equipment Technical
Publications), through the Internet, on the Army Electronic Product Support
(AEPS) website. The Internet address is http://aeps.ria.army.mil. If you
need a password, scroll down and click on "ACCESS REQUEST FORM". The
DA Form 2028 is located in the ONLINE FORMS PROCESSING section of
the AEPS. Fill out the form and click on SUBMIT. Using this form on the
AEPS will enable us to respond quicker to your comments and better manage
the DA Form 2028 program. You may also mail, fax or email your letter or
DA Form 2028 direct to: AMSTA-LC-CI / TECH PUBS, TACOM-RI, 1 Rock
Island Arsenal, Rock Island, IL 61299-7630. The email address is TACOM-
[email protected]. The fax number is DSN 793-0726 or
Commercial (309) 782-0726.

ii
TABLE OF CONTENTS

WP Sequence No.

WARNING SUMMARY
HOW TO USE THIS MANUAL
GENERAL INFORMATION........................................................... 0001 00

CHAPTER 1 - DESCRIPTION AND THEORY OF OPERATION

Equipment Description and Data .............................................. 0002 00
Theory of Operation.................................................................... 0003 00

CHAPTER 2 — OPERATOR INSTRUCTIONS

Description and Use of Operator Controls and Indicators:
Leaf Sight ................................................................................... 0004 00
Quadrant Sight ........................................................................... 0005 00
Barrel Latch................................................................................ 0006 00
Trigger and Safety ...................................................................... 0007 00

iii
WP Sequence No.

CHAPTER 2 — OPERATOR INSTRUCTIONS (Cont)

Operation Under Usual Conditions:
Preparation for Firing ................................................................ 0008 00
Firing Techniques....................................................................... 0009 00
Range Estimating ....................................................................... 0010 00
Loading and Firing ..................................................................... 0011 00
Clearing....................................................................................... 0012 00
Hangfire ...................................................................................... 0013 00
Misfire ......................................................................................... 0014 00
Unloading.................................................................................... 0015 00
Operation Under Unusual Conditions:
Unusual Environment/Weather................................................. 0016 00
Nuclear, Biological, and Chemical (NBC) Decontamination
Procedures.............................................................................. 0017 00

iv
WP Sequence No.

CHAPTER 3 — TROUBLESHOOTING PROCEDURES

Troubleshooting Index ............................................................... 0018 00
Operational Checkout and Troubleshooting Procedures ......... 0019 00

CHAPTER 4 — MAINTENANCE INSTRUCTIONS

Preventive Maintenance Checks and Services (PMCS)
Introduction............................................................................ 0020 00
PMCS Procedures ....................................................................... 0021 00
Lubrication Instructions............................................................. 0022 00
Inspection of Installed Items...................................................... 0023 00
Disassembly ................................................................................ 0024 00
Cleaning ...................................................................................... 0025 00
Assembly ..................................................................................... 0026 00
Lubrication.................................................................................. 0027 00
Test and Inspection .................................................................... 0028 00

v
WP Sequence No.

CHAPTER 4 — MAINTENANCE INSTRUCTIONS (Cont)

Use of Quick Release Bracket:
Cleaning/Lubrication ................................................................. 0029 00
Dismounting from M16A4 Rifle or M4/M4A1 Carbine............. 0030 00
Mounting to M4 Carbine............................................................ 0031 00
Mounting to M16A4 Rifle .......................................................... 0032 00

Mounting Leaf Sight and Rail Grabber Assembly ................... 0033 00

Ammunition Marking Information ........................................... 0034 00

vi
WP Sequence No.

CHAPTER 5 — SUPPORTING INFORMATION

References .................................................................................. 0035 00
Components of End Item (COEI) and Basic Issue
Items (BII) Lists ..................................................................... 0036 00
Additional Authorization List (AAL)......................................... 0037 00
Expendable and Durable Items List ......................................... 0038 00

ALPHABETICAL INDEX

vii
HOW TO USE THIS MANUAL

The safest, easiest, and best way to operate the M203 40-mm Grenade
Launcher is to use this manual. Learning to use this TM is as easy as
reading through this section. Knowing what is in this manual and how to use
it will save you time and work and will help you to avoid exposing yourself to
unnecessary hazards while performing your job.

So where do you start?

Right here, if this is the first time you are using this TM. Be sure to
completely read this section on how to use this manual first. There's a lot of
information here that you need to know.

viii
Organization

This manual covers the operation of the M203 and M203A1 40-mm Grenade
Launchers. The manual itself is divided into five chapters. Chapters are
divided into Work Packages. The five chapters, and what they contain, are
found in the Table of Contents in the front of this manual. For example, to
learn about operating the grenade launcher, you would look in the table of
contents and discover that Chapter 2 provides all pertinent information
about the operation of the grenade launcher. Since Chapter 2 covers a great
deal of information, you will have to scan the chapter to find the specific
information you will need.

ix
HOW TO USE THIS MANUAL (Cont)

Organization (Cont)

In the final chapter of this manual, you will find supporting information.
Each work package provides specific information that will assist you in
performing the various operational tasks. The work packages provide such
information as additional references (i.e., other TMs or FMs), as in
WP 0035 00, and Basic Issue Items (BII), as in WP 0036 00. Others provide
information unique to the needs of the grenade launcher. Become familiar
with all supporting information before beginning any operational or
maintenance task.

Am I ready to use this TM?

x
If you’ve taken the time necessary to read this section, and are sure of the
location and arrangement of the different sections of this TM, you are ready
to begin. Remember, this TM has been arranged with you, the user, in mind.
Your safety and ability to perform the operational and maintenance tasks in
the most efficient manner hinge on your ability to perform and understand
the information contained in this manual. If you fully understand the
arrangement and purpose of this TM, and have taken the time to read
through this section, you will have no trouble operating and maintaining the
grenade launcher in the manner for which it was designed.

xi/xii blank
GENERAL INFORMATION 0001 00

4 0 -M M G R E N A D E L A U N C H E R , M 2 0 3 2 M J 0 0 1

0001 00-1
GENERAL INFORMATION (Cont) 0001 00

2 M J 0 0 2

4 0 -M M G R E N A D E L A U N C H E R , M 2 0 3 A 1

0001 00-2
Q U IC K R E L E A S E
B R A C K E T
2 M J 0 0 3
4 0 -M M G R E N A D E L A U N C H E R , M 2 0 3 , W IT H A D A P T E R
R A IL A N D Q U IC K R E L E A S E B R A C K E T

0001 00-3
GENERAL INFORMATION (Cont) 0001 00

SCOPE

Type of Manual. Operator's manual, including operator maintenance.

Model Number and Equipment Name. M203 and M203A1 Grenade

Launchers.

Purpose of Equipment. The grenade launcher M203 was designed to be

used with the M16 series rifles, can be field-stripped in a hurry without
special tools, and fires a 40-mm grenade.

The grenade launcher M203A1 was designed to be used with the M4 series
carbines. It is functionally identical to the M203.

0001 00-4
MAINTENANCE FORMS, RECORDS, AND REPORTS

Department of the Army forms and procedures used for equipment

maintenance will be those prescribed by DA PAM 738-750, Functional Users
Manual for the Army Maintenance Management System (TAMMS).

REPORTING EQUIPMENT IMPROVEMENT RECOMMENDATIONS (EIR)

If your grenade launcher needs improvement, let us know. Send us an EIR.

You, the user, are the only one who can tell us what you don't like about your
equipment. Let us know why you don't like the design or performance. Put it
on an SF 368 (Product Quality Deficiency Report). Mail it to the address
specified in DA PAM 738-750, Functional Users Manual for the Army
Maintenance Management System (TAMMS), or as specified by the acquiring
activity. We will send you a reply.

0001 00-5
GENERAL INFORMATION (Cont) 0001 00

CORROSION PREVENTION AND CONTROL (CPC)

Corrosion Prevention and Control (CPC) of Army materiel is a continuing

concern. It is important that any corrosion problems with this item be
reported so that the problem can be corrected and improvements can be made
to prevent the problem in future items.

While corrosion is typically associated with rusting of metals, it can also

include deterioration of other materials, such as rubber and plastic. Unusual
cracking, softening, swelling, or breaking of these materials may be a
corrosion problem.

If a corrosion problem is identified, it can be reported using SF 368, Product

Quality Deficiency Report. Use of key words such as "corrosion," "rust,"
"deterioration," or "cracking" will ensure that the information is identified as
a CPC problem.

0001 00-6
The form should be submitted to the address specified in DA PAM 738-750,
Functional Users Manual for the Army Maintenance Management System
(TAMMS).

DESTRUCTION OF ARMY MATERIEL TO PREVENT ENEMY USE

For procedures to destroy this equipment to prevent its use by the enemy,
refer to TM 750-244-7.

PREPARATION FOR STORAGE OR SHIPMENT

The operator has no responsibility for preparation for storage or shipment.

END OF WORK PACKAGE

0001 00-7/8 blank

CHAPTER 1

DESCRIPTION AND
THEORY OF OPERATION
EQUIPMENT DESCRIPTION AND DATA 0002 00

EQUIPMENT CHARACTERISTICS, CAPABILITIES, AND FEATURES

The grenade launcher M203 is a single shot weapon designed for use with the
M16 series rifles and fires a 40-mm grenade. It has a leaf sight and a
quadrant sight. The grenade launcher M203A1 is a single shot weapon
designed for use with the M4 series carbines.

The quick release bracket is used on M4 and M4A1 carbines equipped with
the M4 Adapter Rail System and on M16A4 rifles equipped with the M5
Adapter Rail System.

LOCATION AND DESCRIPTION OF MAJOR COMPONENTS

The grenade launcher is composed of the following: barrel, receiver, hand

guard, leaf sight, and quadrant sight.

0002 00-1
EQUIPMENT DESCRIPTION AND DATA (Cont) 0002 00

Q U A D R A N T
H A N D S IG H T
L E A F
S IG H T G U A R D

B A R R E L R E C E IV E R

S A F E T Y T R IG G E R
M 2 0 3 2 M J 0 0 4

0002 00-2
L E A F S IG H T H A N D G U A R D Q U A D R A N T S IG H T
A S S E M B L Y A S S E M B L Y A S S E M B L Y

B A R R E L
A S S E M B L Y R E C E IV E R
A S S E M B L Y 2 M J 0 0 5
M 2 0 3 A 1

0002 00-3
EQUIPMENT DESCRIPTION AND DATA (Cont) 0002 00

L E A F S IG H T &
R A IL G R A B B E R M 4 /M 5 A D A P T E R R A IL

Q U IC K R E L E A S E
B R A C K E T
2 M J 0 0 6
M 2 0 3 , W IT H A D A P T E R R A IL A N D
Q U IC K R E L E A S E B R A C K E T

EQUIPMENT DATA

Weight: Maximum effective range:

Launcher 1.35 kg (3 lb) Area Target 350 meters (1,155 ft)
Rifle M16A1 2.93 kg (6.5 lb) Point Target 150 meters (495 ft)
Total 4.28 kg (9.5 lb)

0002 00-4
Maximum range: Minimum safe range:
400 meters (1,320 ft) Combat situation 31 meters (102 ft)
Training situation 165 meters (541 ft)

WARNING
When firing High Explosive (HE) grenades at targets within 130
meters (427 ft), be in a protected position. When training, do not fire
at targets within 165 meters (541 ft). When in combat, do not fire at
targets closer than 31 meters (102 ft).

END OF WORK PACKAGE

0002 00-5/6 blank

THEORY OF OPERATION 0003 00

1. Open the launcher barrel, place the weapon on safe, insert a round, and
close the launcher barrel.

2. Place the launcher to shoulder. Keep muzzle pointed at target and

move the safety from the safe to the fire position.

3. Align the front and rear sight with the target and squeeze the trigger.

4. Squeezing the trigger releases the firing pin and allows it to impact the
primer on the round.

5. The primer ignites the propellant in the round.

6. Gas from the burning propellant pushes the projectile along the barrel
of the launcher.

0003 00-1
THEORY OF OPERATION (Cont) 0003 00

7. The rifling in the barrel causes the projectile to rotate, which provides
stability during flight to the target.

END OF WORK PACKAGE

0003 00-2
CHAPTER 2

OPERATOR INSTRUCTIONS
DESCRIPTION AND USE OF OPERATOR CONTROLS
AND INDICATORS - LEAF SIGHT 0004 00

WARNING
The 50 meter (165 ft) mark on the leaf sight blade is marked in red
to emphasize that this range is not to be used in zeroing procedures.

Leaf Sight: Aligns with front sight post of the M16A1 rifle.

Windage Adjustment Screw: Turns clockwise to move leaf sight to left for
wind from the left; turns counterclockwise to adjust for wind from the right.

Elevation Adjustment Screw: Loosens and allows operator to raise leaf

sight blade to increase range, or to lower leaf sight blade to decrease range.

END OF WORK PACKAGE

0004 00-1/2 blank

DESCRIPTION AND USE OF OPERATOR CONTROLS
AND INDICATORS - QUADRANT SIGHT 0005 00

Quadrant Sight: Attaches to rifle handle/sight. To use, unfold front sight

post and rear aperture.

Latch: Release of latch allows range quadrant adjustment.

Front Sight Post: Turns right for less elevation and left for more elevation.
It compensates for headwind or rear wind.

Retainer: Depression of retainer allows rear aperture to slide in or out.

Rear Aperture: Compensates for wind from the right or the left.

END OF WORK PACKAGE

0005 00-1/2 blank

DESCRIPTION AND USE OF OPERATOR CONTROLS
AND INDICATORS - BARREL LATCH 0006 00

Barrel Latch: Locks barrel in the closed position. Press latch and slide
barrel forward to load the weapon.

END OF WORK PACKAGE

0006 00-1/2 blank

DESCRIPTION AND USE OF OPERATOR CONTROLS
AND INDICATORS - TRIGGER AND SAFETY 0007 00

Trigger: Squeezing the trigger fires the launcher.

Safety: The safety has two positions — safe and fire. Keep safety on safe
position until ready to fire. Safety is used to safe the launcher.

END OF WORK PACKAGE

0007 00-1/2 blank

OPERATION UNDER USUAL CONDITIONS -
PREPARATION FOR FIRING 0008 00

NOTE
Perform the Before Operation (B) Preventive Maintenance Checks
and Services (PMCS). Refer to WP 0021 00.

END OF WORK PACKAGE

0008 00-1/2 blank

OPERATION UNDER USUAL CONDITIONS - FIRING TECHNIQUES 0009 00

1. For short range targets (31 meters (102 ft) or less), place leaf sight
down and use rifle sights. Estimate distance to target and be sure to
aim at the foot of the target (M576 round).

L E A F S IG H T

2 M J 0 0 7

0009 00-1
OPERATION UNDER USUAL CONDITIONS -
FIRING TECHNIQUES (Cont) 0009 00

2. For targets from 50 to 250 meters (165 to 820 ft), raise leaf sight and
use with rifle front sight. For targets from 50 to 400 meters (165 to
1320 ft), use front and rear sight of the quadrant sight only.

L E A F
S IG H T

5 0
7 5
0 0
2 5

2 M J 0 0 8

0009 00-2
3. Launcher may be fired from standing, kneeling, or prone position.
When firing long range from prone position, place stock of weapon on
the ground. For all other positions, hold stock firmly against shoulder.

2 M J 0 0 9

0009 00-3
OPERATION UNDER USUAL CONDITIONS -
FIRING TECHNIQUES (Cont) 0009 00

4. LEAF SIGHT

Range
• Leaf sight scale marked in 50 meter (165 ft) increments for targets from
50 to 250 meters (165 to 820 ft).

Headwind and Rear Wind

• Loosen the elevation adjustment screw to move the leaf sight up to
increase range for headwind. Lower it to decrease range for rear wind.

• Use the rim of a used 40-mm cartridge to turn the elevation adjustment
screw.

• 1 increment = 10 meters (33 ft) at 200 meter (660 ft) range.

0009 00-4
N O T E :
M E T E R S N O T M A R K E D
2 5 0
O N S IG H T
2 0 0
L E A F S IG H T
(R A N G E ) S C A L E 1 5 0
(IN M E T E R S ) 1 0 0
E L E V A T IO N 5 0
A D J U S T M E N T E L E V A T IO N
IN C R E M E N T S A D J U S T M E N T
(1 0 M E T E R S ) S C R E W
W IN D A G E
W IN D A G E
A D J U S T M E N T
A D J U S T M E N T
S C R E W
IN C R E M E N T S
(1 .5 M E T E R S )

2 M J 0 1 0

0009 00-5
OPERATION UNDER USUAL CONDITIONS -
FIRING TECHNIQUES (Cont) 0009 00

Left Wind and Right Wind

• Turn windage adjustment screw clockwise to adjust for wind from the
left. Turn counterclockwise to adjust for wind from the right.

• 1 increment = 1.5 meters (5 ft) at 200 meter (660 ft) range.

5. QUADRANT SIGHT

Range
• Range quadrant is marked in 25 meter (83 ft) increments for targets
from 50 to 400 meters (165 to 1320 ft).

• Pull latch toward the user to release quadrant sight arm. Select
elevation.

• Elevation adjustment: 1 notch = 5 meters (17 ft) at 200 meter (660 ft)
range.

0009 00-6
F R O N T N O T C H
L A T C H R E T A IN E R
S IG H T
P O S T
5 0
7 5
0 0 2 5

R E A R
0
3 0 2 5
A P E R T U R E
3 5 0
3 7 5
3
0
4 0

R A N G E Q U A D R A N T
Q U A D R A N T S IG H T A R M 2 M J 0 1 1

Headwind and Rear Wind

• Turn front sight post to increase range for headwind.

• Turn front post sight right to decrease range for rear wind.

0009 00-7
OPERATION UNDER USUAL CONDITIONS -
FIRING TECHNIQUES (Cont) 0009 00

Left Wind and Right Wind

• Depress retainer and slide rear aperture in to adjust for wind from the
right.

• Slide rear aperture out to adjust for wind from the left.

• Vertical line marks center. 1 notch = 1.5 meters (5 ft) at 200 meter
(660 ft) range.

6. If a first round hit is not made, determine where grenade landed in

relation to target (sensing) and adjust to bring next round on target.

END OF WORK PACKAGE

0009 00-8
OPERATION UNDER USUAL CONDITIONS - RANGE ESTIMATING 0010 00

WARNING
When firing High Explosive (HE) grenades at targets within 165
meters (541 ft) (minimum safe), be in a protected position. When
training (minimum safe), do not fire at targets within 165 meters
(541 ft). When in combat, do not fire at targets closer than 31 meters
(102 ft).

A R M
A X
E A IM
P O T A U M
IN T T R R G
C O M T A R A IN
IN G E T
B A T G E
T
R A N G E IN M E T E R S 3 1 1 5 0 1 6 5 3 5 0 4 0 0
R A N G E IN F E E T 1 0 2 4 9 5 5 4 1 1 1 5 5 1 3 2 0

M IN IM U M M A X IM U M
S A F E E F F E C T IV E
2 M J 0 1 2

0010 00-1
OPERATION UNDER USUAL CONDITIONS -
RANGE ESTIMATING (Cont) 0010 00

Z E R
O IN G

5 m
T R Y A G A IN (1 7 ft)

2 M J 0 1 3

WARNING
Do not zero in under 100 meters (330 ft).

0010 00-2
NOTE
Hitting the target depends upon the user's ability to determine
range.

1. Select a target at 200 meters (660 ft) and fire a round. If the round
does not fall within 5 meters (17 ft) of target, zero the weapon as
follows.

a. Adjust sight for more or less elevation.

b. Adjust windage for each firing.

c. After each round is fired, adjust until three consecutive rounds

land within 5 meters (17 ft) of aiming point.

END OF WORK PACKAGE

0010 00-3/4 blank

OPERATION UNDER USUAL CONDITIONS -
LOADING AND FIRING 0011 00

WARNING
Keep muzzle down range and clear of all troops.
Hearing protection is required for the user and all adjacent
personnel on firing range, when using M585 cartridge.

1. Keep safety in safe position until

ready to fire.

S A F E 2 M J 0 1 4

0011 00-1
OPERATION UNDER USUAL CONDITIONS -
LOADING AND FIRING (Cont) 0011 00

2. Press latch and slide barrel forward.

2 M J 0 1 5

0011 00-2
WARNING
Do not fire pyrotechnic ammunition made for the AN-M8
Pyrotechnic Pistol in the Grenade Launcher M203. It is very
dangerous.

To avoid personnel injury or death, make sure the right ammunition

is being loaded. Never load aircraft ammunition M384 (HE) or M385
(practice) ammunition.

0011 00-3
OPERATION UNDER USUAL CONDITIONS -
LOADING AND FIRING (Cont) 0011 00

CAUTION
Before loading, make sure bore and chamber are clean and dry.

Excessive dry firing of this weapon may result in damage to the

breech insert or receiver. Only dry fire the grenade launcher to
perform checks and services listed in the technical manuals or to
remove spring tension prior to storing the weapon in an arms rack.

3. Insert ammunition into chamber.

0011 00-4
2 M J 0 1 6

0011 00-5
OPERATION UNDER USUAL CONDITIONS -
LOADING AND FIRING (Cont) 0011 00

4. Slide barrel closed until it locks (clicks).

C L IC K
2 M J 0 1 7

0011 00-6
WARNING
To avoid personnel injury or death, be sure there are no obstacles
(sling, branches, etc.) in line of fire.

5. Determine target distance and select range.

6. Move safety to fire position.

7. Aim and squeeze the trigger to fire.

NOTE
Practice breath control when firing the rifle.

0011 00-7
OPERATION UNDER USUAL CONDITIONS -
LOADING AND FIRING (Cont) 0011 00

2 M J 0 1 8

END OF WORK PACKAGE

0011 00-8
OPERATION UNDER USUAL CONDITIONS - CLEARING 0012 00

1. Press the latch and move barrel forward. The casing automatically
extracts and ejects.

2 M J 0 1 9

0012 00-1
OPERATION UNDER USUAL CONDITIONS - CLEARING (Cont) 0012 00

2. Stuck casings need a little help. Remove by tapping with rifle cleaning
rod.

2 M J 0 2 0

END OF WORK PACKAGE

0012 00-2
OPERATION UNDER USUAL CONDITIONS - HANGFIRE 0013 00

Hangfire: A delay in the ignition of propellant charge.

WARNING
Keep muzzle on target and clear all personnel from the area (at least
80 meters or 284 feet). Wait 30 seconds before removing round.

1. Unload the round and catch it, or unload close to ground for a short fall.

2. Store the round at a safe distance away from serviceable ammunition

until it is determined whether the round or the weapon is defective.

3. A dented primer is a hangfire. Handle accordingly.

END OF WORK PACKAGE

0013 00-1/2 blank

OPERATION UNDER USUAL CONDITIONS - MISFIRE 0014 00

Misfire: A failure to fire.

WARNING
Keep muzzle on target and clear all personnel from the area (at least
80 meters or 264 feet). Wait 30 seconds before removing round.

1. Unload the round and catch it, or unload close to ground for a short fall.

2. Store the round at a safe distance away from serviceable ammunition

until it is determined whether the round or the weapon is defective.

3. If the primer is not dented, the firing mechanism is faulty. A dented

primer is a hangfire. Handle accordingly.

0014 00-1
OPERATION UNDER USUAL CONDITIONS - MISFIRE (Cont) 0014 00

4. If the mechanism is repaired, the round may be reloaded and fired.

5. Notify the NCO or unit armorer.

END OF WORK PACKAGE

0014 00-2
OPERATION UNDER USUAL CONDITIONS - UNLOADING 0015 00

1. Press the latch and move barrel forward.

2. The round automatically extracts and ejects.

0015 00-1
OPERATION UNDER USUAL CONDITIONS - UNLOADING (Cont) 0015 00

C A T C H R O U N D
D O N O T L E T IT D R O P
2 M J 0 2 1
END OF WORK PACKAGE

0015 00-2
OPERATION UNDER UNUSUAL CONDITIONS -
UNUSUAL ENVIRONMENT/WEATHER 0016 00

2 M J 0 2 2

HOT, DUSTY, AND SANDY AREAS. Clean often. Oil frequently because
heat dissolves the oil rapidly. Wipe oil from exposed surfaces. Cover weapon
as much as possible. Keep sand out of parts.

0016 00-1
OPERATION UNDER UNUSUAL CONDITIONS -
UNUSUAL ENVIRONMENT/WEATHER (Cont) 0016 00

RAINY, HUMID, AND SALTY AIR. Rainy, humid, and salty air
contaminate the lubrication and cause corrosion. Inspect grenade launcher
daily. Dry, clean, and lubricate as necessary.

BELOW FREEZING TEMPERATURES. Keep weapon wrapped in a

parka or blanket when it is brought from a cold area to a warm area. Allow it
to reach room temperature gradually. If condensation forms, dry and
lubricate at room temperature before taking it out again into cold weather;
otherwise, ice will form in the mechanism. Keep ice and snow out of
operating parts.

0016 00-2
IMMERSION IN WATER. After immersion in water, disassemble, clean,
oil, and reassemble as soon as possible. Make sure grenade launcher is dry.

NOTE
Keep the weapon clean and lubricated with CLP (item 2,
WP 0038 00).

END OF WORK PACKAGE

0016 00-3/4 blank

OPERATION UNDER UNUSUAL CONDITIONS - NUCLEAR,
BIOLOGICAL, AND CHEMICAL (NBC) DECONTAMINATION
PROCEDURES 0017 00

General procedures can be found in FM 3-87, FM 21-40, and TM 3-220.

END OF WORK PACKAGE

0017 00-1/2 blank

CHAPTER 3

TROUBLESHOOTING PROCEDURES
TROUBLESHOOTING INDEX 0018 00

INTRODUCTION

The troubleshooting table in WP 0019 00 lists the common malfunctions you

may find when you operate or maintain the grenade launcher or its
components. Perform the test/inspections and corrective actions in the order
listed.

The troubleshooting table cannot list all possible malfunctions or corrective

actions. See your supervisor for any problems not in the table.

0018 00-1
TROUBLESHOOTING INDEX (Cont) 0018 00

MALFUNCTION/SYMPTOM INDEX

Malfunction Number

Failure to Chamber .............................................................................. 3

Failure to Extract ................................................................................. 2
Failure to Fire ....................................................................................... 1
Failure to Lock ...................................................................................... 4

END OF WORK PACKAGE

0018 00-2
OPERATIONAL CHECKOUT AND TROUBLESHOOTING
PROCEDURES 0019 00

Table 1. Troubleshooting Procedures.

MALFUNCTION TEST OR INSPECTION CORRECTIVE ACTION

1. FAILURE TO FIRE. 1. Check for too much Point weapon up for 10

oil or water in back to 15 seconds and hand
of breech insert. function. Refer to
WP 0028 00.

2. Check for dirt and/or Clean thoroughly. Refer

residue in firing pin to WP 0025 00.
hole.

0019 00-1
OPERATIONAL CHECKOUT AND TROUBLESHOOTING
PROCEDURES (Cont) 0019 00

Table 1. Troubleshooting Procedures (Cont).

MALFUNCTION TEST OR INSPECTION CORRECTIVE ACTION

1. FAILURE TO FIRE 3. Check for dirt in Clean thoroughly. Refer

(Cont). locator slot. to WP 0025 00.

4. Check for faulty Replace ammunition.

ammunition. Refer to WP 0011 00.

2. FAILURE TO Check for casing stuck Remove with rifle

EXTRACT. in barrel. cleaning rod. Refer to
WP 0012 00.

0019 00-2
MALFUNCTION TEST OR INSPECTION CORRECTIVE ACTION

3. FAILURE TO Check for faulty ammu- Replace ammunition or

CHAMBER. nition or dirty chamber. clean bore and chamber.
Refer to WP 0011 00 or
WP 0025 00.

4. FAILURE TO Check for dirty follower Notify NCO or unit

LOCK. or receiver cavity. armorer.

END OF WORK PACKAGE

0019 00-3/4 blank

CHAPTER 4

MAINTENANCE INSTRUCTIONS
PREVENTIVE MAINTENANCE CHECKS AND SERVICES
(PMCS) INTRODUCTION 0020 00

INITIAL SETUP:

References
DA Form 2404
DA PAM 738-750
WP 0021 00

GENERAL

a. Before Operation. Perform the Before PMCS.

b. During Operation. Perform the During PMCS.

c. After Operation. Perform the After PMCS.

0020 00-1
PREVENTIVE MAINTENANCE CHECKS AND SERVICES
(PMCS) INTRODUCTION (Cont) 0020 00

d. If the Equipment Fails to Operate. Troubleshoot with proper

equipment. Report any deficiencies using the proper form; see DA PAM
738-750. If deficiencies cannot be corrected, notify unit armorer.

PMCS PROCEDURES

WP 0021 00 lists required checks and services to be performed by personnel

who use the M68 Reflex Sight w/Quick Release and Mount. The table is
divided as follows:

a. Item No. Column. Checks and services are numbered in disassembly

sequence. This column shall be used as a source of item numbers for the "TM
Number" column on DA Form 2404, Equipment Inspection and Maintenance
Worksheet, in recording results of PMCS.

0020 00-2
b. Interval Column. This column gives the designated interval when
each check is to be performed.

c. Man-Hour Column. This column gives the amount of time required

for the procedure.

d. Item To Be Checked or Serviced Column. This column lists the

items to be checked or serviced.

e. Procedure Column. This column contains a brief description of the

procedure by which the check is to be performed. It contains all of the
information required to accomplish the checks and services.

0020 00-3
PREVENTIVE MAINTENANCE CHECKS AND SERVICES
(PMCS) INTRODUCTION (Cont) 0020 00

f. Equipment Not Ready/Available If: Column. This column contains

a brief statement of the condition (e.g., malfunction, shortage) that would
cause the covered equipment to be less than fully ready to perform its
assigned mission.

END OF WORK PACKAGE

0020 00-4
PMCS PROCEDURES 0021 00

INITIAL SETUP:

References
WP 0009 00
WP 0012 00
WP 0024 00
WP 0025 00
WP 0036 00
WP 0037 00

0021 00-1
PMCS PROCEDURES (Cont) 0021 00

Table 1. Preventive Maintenance Checks and Services.

ITEM TO BE EQUIPMENT
CHECKED NOT READY/
ITEM MAN- OR AVAILABLE
NO. INTERVAL HOUR SERVICED PROCEDURE IF:

NOTE
Do not interchange barrel assemblies or components from one weapon to another.
1 Before Grenade a. Open barrel, clear
Launcher and weapon (WP 0012 00).
Rifle
Make an overall visual Parts are
inspection for missing or missing or
damaged components. damaged.
Check to make sure that M203/M203A1
launcher is firmly attach- is not firmly
ed to weapon. Report any attached to
deficiencies to the unit weapon.
armorer.

0021 00-2
ITEM TO BE EQUIPMENT
CHECKED NOT READY/
ITEM MAN- OR AVAILABLE
NO. INTERVAL HOUR SERVICED PROCEDURE IF:

b. Ensure M203/M203A1 Weapon is not

is safety wired. safety wired.

2 M J 0 2 4

0021 00-3
PMCS PROCEDURES (Cont) 0021 00

Table 1. Preventive Maintenance Checks and Services (Cont).

ITEM TO BE EQUIPMENT
CHECKED NOT READY/
ITEM MAN- OR AVAILABLE
NO. INTERVAL HOUR SERVICED PROCEDURE IF:

2 Before Authorized Check authorized

Equipment equipment for
serviceability and
completeness (WP
0036 00 and WP 0037 00).
3 Before Barrel a. Wipe oil and debris Barrel is
Assembly from barrel bore and dented,
chamber (WP 0025 00). cartridge
retainers are
broken/bent, or
cartridge
locator is
damaged.

0021 00-4
ITEM TO BE EQUIPMENT
CHECKED NOT READY/
ITEM MAN- OR AVAILABLE
NO. INTERVAL HOUR SERVICED PROCEDURE IF:

b. Check barrel for Barrel is

cracks. Check if barrel cracked, dented,
is dented and/or or damaged.
damaged.
c. Check for loose, Barrel grip is
cracked, or missing loose, missing,
barrel grip. or has crack
longer than one
inch.

0021 00-5
PMCS PROCEDURES (Cont) 0021 00

Table 1. Preventive Maintenance Checks and Services (Cont).

ITEM TO BE EQUIPMENT
CHECKED NOT READY/
ITEM MAN- OR AVAILABLE
NO. INTERVAL HOUR SERVICED PROCEDURE IF:

3 Before Barrel d. Check for broken Cartridge

(Cont) (Cont) Assembly and/or damaged locator and
(Cont) cartridge locator and cartridge
cartridge retainers. retainers are
broken and/or
damaged.

0021 00-6
ITEM TO BE EQUIPMENT
CHECKED NOT READY/
ITEM MAN- OR AVAILABLE
NO. INTERVAL HOUR SERVICED PROCEDURE IF:

4 Before Receiver
Assembly
WARNING
The grenade launcher could fire without squeezing the trigger if the sear does not
function properly.
a. Check for proper Sear does not
operation of sear. function
Make sure weapon is properly.
cleared. Cock the
launcher and squeeze
trigger. Firing pin

0021 00-7
PMCS PROCEDURES (Cont) 0021 00

Table 1. Preventive Maintenance Checks and Services (Cont).

ITEM TO BE EQUIPMENT
CHECKED NOT READY/
ITEM MAN- OR AVAILABLE
NO. INTERVAL HOUR SERVICED PROCEDURE IF:

4 Before Receiver should release. Hold

(Cont) (Cont) Assembly trigger to rear; cock the
(Cont) launcher. Release
trigger, then squeeze.
Firing pin should release.

0021 00-8
ITEM TO BE EQUIPMENT
CHECKED NOT READY/
ITEM MAN- OR AVAILABLE
NO. INTERVAL HOUR SERVICED PROCEDURE IF:

F IR E S A F E
2 M J 0 2 5

0021 00-9
PMCS PROCEDURES (Cont) 0021 00

Table 1. Preventive Maintenance Checks and Services (Cont).

ITEM TO BE EQUIPMENT
CHECKED NOT READY/
ITEM MAN- OR AVAILABLE
NO. INTERVAL HOUR SERVICED PROCEDURE IF:

4 Before Receiver b. Check safety in both Safety does not

(Cont) (Cont) Assembly SAFE and FIRE function
(Cont) positions with trigger. properly.
Place launcher in Barrel stop or
SAFE position. Move latch does not
barrel forward and function.
back to check barrel
stop and barrel latch
function. Report all
deficiencies to unit
armorer.

0021 00-10
ITEM TO BE EQUIPMENT
CHECKED NOT READY/
ITEM MAN- OR AVAILABLE
NO. INTERVAL HOUR SERVICED PROCEDURE IF:

F IR E
S A F E
2 M J 0 2 6

0021 00-11
PMCS PROCEDURES (Cont) 0021 00

Table 1. Preventive Maintenance Checks and Services (Cont).

ITEM TO BE EQUIPMENT
CHECKED NOT READY/
ITEM MAN- OR AVAILABLE
NO. INTERVAL HOUR SERVICED PROCEDURE IF:

4 Before Receiver c. Visually examine the Breech insert

(Cont) (Cont) Assembly breech insert. It must protrudes above
(Cont) be flush or below the breech face.
breech face. If the
breech insert is
protruding above the
breech face, report
deficiency to unit
armorer.

0021 00-12
ITEM TO BE EQUIPMENT
CHECKED NOT READY/
ITEM MAN- OR AVAILABLE
NO. INTERVAL HOUR SERVICED PROCEDURE IF:

5 Before Hand Guard Check hand guard and Hand guard or

and Leaf Sight leaf sight for damage. leaf sight is
Check sight functioning damaged.
(WP 0009 00). If
defective, report to unit
armorer.

H A N D G U A R D
L E A F
S IG H T

2 M J 0 2 7

0021 00-13
PMCS PROCEDURES (Cont) 0021 00

Table 1. Preventive Maintenance Checks and Services (Cont).

ITEM TO BE EQUIPMENT
CHECKED NOT READY/
ITEM MAN- OR AVAILABLE
NO. INTERVAL HOUR SERVICED PROCEDURE IF:

6 Before Quadrant Check quadrant sight for Parts are

Sight damage. Check the sight broken,
functioning (WP 0009 00). missing, or not
Report deficiencies to the functioning
unit armorer. properly.

0021 00-14
ITEM TO BE EQUIPMENT
CHECKED NOT READY/
ITEM MAN- OR AVAILABLE
NO. INTERVAL HOUR SERVICED PROCEDURE IF:

5 0

2 M J 0 2 8

0021 00-15
PMCS PROCEDURES (Cont) 0021 00

Table 1. Preventive Maintenance Checks and Services (Cont).

ITEM TO BE EQUIPMENT
CHECKED NOT READY/
ITEM MAN- OR AVAILABLE
NO. INTERVAL HOUR SERVICED PROCEDURE IF:

7 During Grenade Observe operation and Grenade

Launcher functioning for launcher does
component failure. not function
Report failures to unit properly.
armorer. Check bore
frequently for debris.
Clean bore if dirty
(WP 0025 00).

0021 00-16
ITEM TO BE EQUIPMENT
CHECKED NOT READY/
ITEM MAN- OR AVAILABLE
NO. INTERVAL HOUR SERVICED PROCEDURE IF:

8 After Grenade Field strip (WP 0024 00). Parts are

Launcher Inspect for damaged or missing or
missing components damaged.
(WP 0024 00). Report
deficiencies to unit
armorer. Clean and
lubricate in accordance
with WP 0025 00.

END OF WORK PACKAGE

0021 00-17/18 blank

LUBRICATION INSTRUCTIONS 0022 00

INITIAL SETUP:

Materials/Parts
Cleaner, lubricant, and preservative (CLP) (item 2, WP 0038 00)
Dry cleaning solvent (SD) (item 7, WP 0038 00)
Rifle bore cleaning compound (RBC) (item 3, WP 0038 00)
Weapons lubricating oil (LAW) (item 4, WP 0038 00)
Weapons lubricating oil (LSA) (item 5, WP 0038 00)

0022 00-1
LUBRICATION INSTRUCTIONS (Cont) 0022 00

2 M J 0 2 3

1. Periodic lubrication can be performed without disassembling. Keep the

weapon clean and lubricated even when it is not used for a while.

0022 00-2
2. Perform required lubrication during maintenance procedures.

3. CLP (item 2, WP 0038 00) is the authorized lubricant. It has a

temperature range of -65 °F (-54 °C) to 150 °F (66 °C).

4. When operating, clean and lubricate grenade launcher daily after

operation.

5. When in inactive storage, clean and lubricate grenade launcher

quarterly or when corrosion appears.

0022 00-3
LUBRICATION INSTRUCTIONS (Cont) 0022 00

Whenever the term Cleaner, Lubricant, and Preservative (CLP) or the words
lubricant, LSA, or LAW are cited in this technical manual, it is to be
interpreted to mean CLP, LSA, or LAW can be utilized as applicable. The
listed constraints must be followed:

1. Under all but the coldest arctic conditions, LSA (item 5, WP 0038 00) or
CLP (item 2, WP 0038 00) are the lubricants to use on the weapon. Either
may be used at -10 °F (-23 °C) and above. However, do not use both on the
same weapon at the same time.

2. LAW (item 4, WP 0038 00) is the lubricant to use during cold arctic
conditions, +10 °F (-12 °C) and below.

3. Any of the lubricants may be used from -10 °F (-23 °C) to +10 °F
(-12 °C).

0022 00-4
4. Do not mix lubricants on the same weapon. The weapon must be
thoroughly cleaned during change from one lubricant to another. Dry
cleaning solvent (SD) (item 7, WP 0038 00) is recommended for cleaning
during change from one lubricant to another.

5. Rifle bore cleaning compound (RBC) (item 3, WP 0038 00) may be used
to remove carbon buildup in the bore and other portions of the weapon.

6. Dry cleaning solvent (SD) (item 7, WP 0038 00) may be utilized for
cleaning weapons. However, SD must not be used on rubber or plastic.

0022 00-5/6 blank

INSPECTION OF INSTALLED ITEMS 0023 00

WARNING
Be sure weapon is NOT loaded.

1. Check your grenade launcher for cracks, burrs, wear, dents, rust, dirt,
and corrosion. Inspect bore for dirt, water, oil, and foreign matter.
B R E E C H
2. Check for loose or protruding breech insert. IN S E R T

2 M J 0 2 9

0023 00-1
INSPECTION OF INSTALLED ITEMS (Cont) 0023 00

3. Check safe and fire positions.

F IR E

S A F E 2 M J 0 3 0

0023 00-2
4. Check barrel latch.

L A T C H

2 M J 0 3 1

0023 00-3
INSPECTION OF INSTALLED ITEMS (Cont) 0023 00

5. Check for missing or broken parts. See the NCO or unit armorer for
repairs.

6. Make sure M203/M203A1 is safety wired.

NOTE
The Quick Release Bracket does not require the use of safety wire.

END OF WORK PACKAGE

0023 00-4
DISASSEMBLY 0024 00

1. Remove the quadrant sight (if used) by loosening the knurled screw on
the right side of the weapon.

#
4
"

K N U R L E D
S C R E W 2 M J 0 3 2

0024 00-1
DISASSEMBLY (Cont) 0024 00

2. Pull back slip ring. Lift up on hand guard and pull to rear to remove.

S L IP
R IN G

H A N D
G U A R D

2 M J 0 3 3

0024 00-2
CAUTION
Do not use a screwdriver or any other tool when removing the hand
guard. Doing so may damage the hand guard and/or slip ring.

NOTE
If removing the hand guard is difficult, use buddy system.

3. Stand the weapon on the buttstock. Grip the stock with one hand and
the lower end of hand guard with the other hand. Have a buddy press
down with both hands on the slip ring. Pull hand guard free.

0024 00-3
DISASSEMBLY (Cont) 0024 00

H A N D
G U A R D

S L IP
R IN G

2 M J 0 3 4

0024 00-4
4. Press barrel latch and move barrel forward to stop.

B A R R E L
L A T C H

2 M J 0 3 5

0024 00-5
DISASSEMBLY (Cont) 0024 00

5. Press barrel stop to release barrel from receiver. Remove barrel.

B A R R E L
S T O P

C L E A N IN G
R O D
S E C T IO N
2 M J 0 3 6

6. Do not interchange barrels from one weapon to another.

END OF WORK PACKAGE

0024 00-6
CLEANING 0025 00

INITIAL SETUP:

Tools and Special Tools

Bore brush thong (WP 0037 00)
Bore cleaning brush (WP 0037 00)

Materials/Parts
Cleaner, lubricant, and preservative (CLP) (item 2, WP 0038 00)
Wiping rag (item 6, WP 0038 00)

0025 00-1
CLEANING (Cont) 0025 00

NOTE
Caring for your grenade launcher is simply good insurance. A little
preventive maintenance will prevent malfunctions.

1. Clean bore and chamber with bore cleaning brush (WP 0037 00), bore
brush thong (WP 0037 00), and CLP (item 2, WP 0038 00).

NOTE
If the M203/M203A1 has been used to fire non-lethal ammunition,
refer to any special cleaning procedures contained in the over-packed
operator instructions.

0025 00-2
B O R E B R U S H
T H O N G

B O R E A N D
C H A M B E R

B O R E C L E A N IN G
B R U S H

2 M J 0 3 7

0025 00-3
CLEANING (Cont) 0025 00

2. Clean area around breech insert and firing pin hole using CLP (item 2,
WP 0038 00).

F IR IN G
P IN H O L E
B R E E C H
IN S E R T
E X T R A C T O R

2 M J 0 3 8

0025 00-4
3. Clean all the dust and dirt from weapon using CLP (item 2,
WP 0038 00) and wiping rag (item 6, WP 0038 00).

4. Keep locator slot clean.

5. Wipe inside of barrel with wiping rag (item 6, WP 0038 00) soaked in
CLP (item 2, WP 0038 00).

0025 00-5
CLEANING (Cont) 0025 00

L O C A T O R
S L O T

B A R R E L
2 M J 0 3 9

END OF WORK PACKAGE

0025 00-6
ASSEMBLY 0026 00

1. Press barrel stop. Slide barrel onto receiver.

2. Move barrel rearward to close.

B A R R E L
S T O P

B A R R E L
2 M J 0 4 0

0026 00-1
ASSEMBLY (Cont) 0026 00

3. Install hand guard and secure with slip ring.

NOTE
If installing the hand guard is difficult, use buddy system.

H A N D
G U A R D S L IP
R IN G

2 M J 0 4 1

0026 00-2
4. Stand weapon on buttstock. Grip stock with one hand and lower end of
hand guard with other hand. Have buddy press down with both hands
on slip ring. Install hand guard.
H A N D G U A R D

S L IP
R IN G

2 M J 0 4 2

0026 00-3
ASSEMBLY (Cont) 0026 00

5. Install quadrant sight and tighten knurled screw on right side.

Q U A D R A N T
#

R

S IG H T
"

2 M J 0 4 3

END OF WORK PACKAGE

0026 00-4
LUBRICATION 0027 00

INITIAL SETUP:

Materials/Parts
Cleaner, lubricant, and preservative (CLP) (item 2, WP 0038 00)

1. Move barrel forward and lubricate locator slot and barrel tracks with
CLP (item 2, WP 0038 00).

0027 00-1
LUBRICATION (Cont) 0027 00

2. Lubricate all metal surfaces with a light coat of CLP (item 2,

WP 0038 00).

B A R R E L
T R A C K S
L O C A T O R
S L O T
2 M J 0 4 4

0027 00-2
3. With barrel installed, apply a few drops of CLP (item 2, WP 0038 00)
through firing pin hole. Keep weapon pointed up 10 - 15 seconds. Cycle
weapon and squeeze trigger to spread the oil.

F IR IN G P IN
H O L E

T R IG G E R

2 M J 0 4 5

0027 00-3
LUBRICATION (Cont) 0027 00

4. Turn grenade launcher upside down and lubricate safety detent with
CLP (item 2, WP 0038 00). It is in the receiver in front of the safety.

S A F E T Y
D E T E N T 2 M J 0 4 6

END OF WORK PACKAGE

0027 00-4
TEST AND INSPECTION 0028 00

WARNING
Be sure weapon is NOT loaded.

1. Cock grenade launcher and squeeze the trigger. Firing pin should
release.

T R IG G E R
2 M J 0 4 7

0028 00-1
TEST AND INSPECTION (Cont) 0028 00

2. Hold trigger to rear and cock grenade launcher. Release trigger and
then squeeze trigger. Firing pin should release.

WARNING
The grenade launcher could fire without squeezing the trigger if the
sear does not function properly.

3. Check safety in both safe and fire positions with trigger. Launcher
must be cocked before safety can be placed in safe position.

0028 00-2
F IR E

S A F E 2 M J 0 4 8

4. Move barrel forward and back to be sure barrel stop and barrel latch
function.

0028 00-3
TEST AND INSPECTION (Cont) 0028 00

B A R R E L
S T O P

B A R R E L
L A T C H
2 M J 0 4 9

END OF WORK PACKAGE

0028 00-4
USE OF QUICK RELEASE BRACKET - CLEANING/LUBRICATION 0029 00

INITIAL SETUP:

Materials/Parts
Cleaner, lubricant, and preservative (CLP) (item 2, WP 0038 00)
Wiping rag (item 6, WP 0038 00)

CLEANING/LUBRICATION

The quick release bracket will be cleaned and lubricated as needed. Clean all
the dust and dirt from the quick release bracket using CLP (item 2,
WP 0038 00) and wiping rag (item 6, WP 0038 00). Lightly lubricate all
external surfaces of the bracket.

0029 00-1
USE OF QUICK RELEASE BRACKET - CLEANING/
LUBRICATION (Cont) 0029 00

S E C U R E D O N
R IF L E /C A R B IN E

M 2 0 3 W /Q U IC K
R E L E A S E B R A C K E T

2 M J 0 5 0

0029 00-2
USE OF QUICK RELEASE BRACKET -
DISMOUNTING FROM M16A4 RIFLE OR M4/M4A1 CARBINE 0030 00

NOTE
If the M203 w/quick release bracket is dismounted from the rifle or
carbine, operator MUST re-zero the rifle or carbine. When the M203
w/quick release bracket is mounted to the rifle or carbine, operator
MUST re-zero the rifle or carbine.

1. Hold retaining spring (1) away from plunger (2).

2. Depress plunger (2).

3. Rotate latch lever (3) upward.

4. Disengage latch arm (4) from hook (5).

0030 00-1
USE OF QUICK RELEASE BRACKET -
DISMOUNTING FROM M16A4 RIFLE OR M4/M4A1 CARBINE (Cont) 0030 00

2 1 3

S E C U R E O N
R IF L E /C A R B IN E

M 2 0 3 W /
Q U IC K
R E L E A S E
B R A C K E T 4

5
R E M O V E D
F R O M
R IF L E /
C A R B IN E
2 M J 0 5 1

0030 00-2
NOTE
Failure to successfully perform step 5 may result in the loss of the
quick release bracket's internal shim plate. If the shim plate is lost
or damaged, contact the unit armorer.

5. Press latch lever (3) fully downward until it engages plunger (2). It will
be necessary to hold retaining spring (1) away from plunger to allow
latch lever to engage plunger. There will be an audible click when latch
lever has engaged plunger and plunger will snap forward toward
muzzle.

0030 00-3
USE OF QUICK RELEASE BRACKET -
DISMOUNTING FROM M16A4 RIFLE OR M4/M4A1 CARBINE (Cont) 0030 00

6. Rotate latch arm (4) up and out of the way to its fully open position.
When performing this step on the rifle, carefully pull latch arm from
position between gas tube and barrel.

7. Disengage trigger guard from magazine well.

END OF WORK PACKAGE

0030 00-4
USE OF QUICK RELEASE BRACKET -
MOUNTING TO M4 CARBINE 0031 00

Principle of the Five-Position Shim Plate

The basic overall length between the barrel nut roll pin at the rear of the
M203 receiver and the starting position shim plate cutout surface at the front
is approximately 11 in. (28 cm). As noted in step 4, some sliding motion may
be detectable between the carbine barrel shoulder and the front of the five-
position shim plate at the starting, or minimum, overall length cutout
position.

Subsequent re-insertion of the five-position shim plate to its #2, #3, #4, or
maximum (fifth) length position (see step 1) will slightly increase the overall
length of the assembly beyond the basic 11 in. (28 cm), and therefore tend to
minimize or eliminate any sliding motion between the barrel shoulder and
the five-position shim plate.

0031 00-1
USE OF QUICK RELEASE BRACKET -
MOUNTING TO M4 CARBINE (Cont) 0031 00

At some point, the unit armorer will note that the shim plate will not fit into
the cutout of the carbine barrel shoulder (see step 4). At this point, go back
to the next lower position and secure, close, and lock the bracket around the
carbine.

The following steps describe checking for sliding motion with the #2 notch up,
and against the carbine barrel shoulder. If the #2 position does not minimize
the sliding motion, repeat the procedure with the #3 notch up and so on. If
the fifth or maximum position is desired, note that the "back" or smooth face
of the shim plate is oriented towards the muzzle. Do not be concerned if only
a small amount of sliding motion is still detectable with the shim plate in its
apparently optimum setting, because the latch arm will compensate for this
when it is closed and locked.

0031 00-2
Mounting Procedure

1. Compare the following illustration with the quick release bracket (1) to
become familiar with all positions of the five-position shim plate (2).

S T A R T IN G P O S IT IO N F IF T H O R M A X IM U M
L E F T S ID E F R O N T (A L L D O T S F A C IN G M U Z Z L E P O S IT IO N (B A C K
V IE W V IE W 2 D O T C U R V E D S ID E D O W N ) F A C IN G M U Z Z L E )

F R O N T S ID E B A C K
# 2 P O S IT IO N # 3 P O S IT IO N # 4 P O S IT IO N
F R O N T
(M U Z Z L E )
V IE W

2 M J 0 5 2

0031 00-3
USE OF QUICK RELEASE BRACKET -
MOUNTING TO M4 CARBINE (Cont) 0031 00

2. Set the five-position shim plate in the bracket to the minimum position
as illustrated, with the 2 dots down and facing the muzzle.

F R O N T
F U L L Y D E P R E S S P L U N G E R
(M U Z Z L E )
T O IN S T A L L /R E M O V E
V IE W
1 T H E S H IM P L A T E
2 M J 0 5 3

0031 00-4
3. If present, remove the lower rail of the M4 Adapter Rail System from
the M4 carbine. Move the rear of the M203 receiver into position
around the carbine barrel. Confirm that latch arm (3) of the bracket is
fully open. Rotate the muzzle end of the M203 towards the carbine
barrel while sliding the M203 firmly to the rear. Visually confirm that
the roll pin in the rear of the M203 receiver engages the carbine barrel
nut at the six o'clock position notch.

2 M J 0 5 4

0031 00-5
USE OF QUICK RELEASE BRACKET -
MOUNTING TO M4 CARBINE (Cont) 0031 00

4. Firmly hold the M203 in position/back against the carbine barrel nut of
the carbine, while also holding the muzzle end of the M203 against the
carbine's barrel. Inspect the five-position shim plate, looking from the
top of the carbine barrel, and also from the front, as illustrated on the
next page. The inner notch of the shim plate should rest behind the
shoulder of the barrel. Try to slide the M203 back and forth if possible,
and note the distance of any sliding motion. Some motion will be
detectable with most carbine barrels with the shim plate in its starting
position. If during this step the cutout in the shim plate does not fit
behind the barrel shoulder, it is probably inserted at its maximum
thickness (no dots facing the muzzle), or position #2, #3, or #4 (see step
1).

0031 00-6
C O R R E C T
B A R R E L S H O U L D E R S H IM
F IT S IN T O C U T O U T P L A T E
IN S H IM P L A T E
M P 5 .5 6 N A T O
1 /7

IN C O R R E C T
B A R R E L S H O U L D E R
D O E S N O T F IT
IN T O C U T O U T IN
S H IM P L A T E 2 M J 0 5 5

0031 00-7
USE OF QUICK RELEASE BRACKET -
MOUNTING TO M4 CARBINE (Cont) 0031 00

NOTE
Endurance testing indicated that it may be necessary to switch to
another position of the shim plate (2) after several thousand rounds
have been fired. The unit armorer should check for excessive sliding
motion each time the shim plate is removed for cleaning/lubrication
and the M203 is remounted to the carbine.

5. Remove the M203 w/quick release bracket from the carbine. Depress
plunger (4), withdraw the shim plate and re-insert it in the #2 position
(see step 1). Note that the #2 position is indicated by a single dot
stamped on its shim plate cutout, and that this side of the shim plate
faces the muzzle.

0031 00-8
6. Re-mount the M203 w/quick release bracket to the carbine's barrel nut
and barrel shoulder. Attempt to slide the M203 from front to rear.

7. If forward and back motion is detected, repeat step 6 with the shim
plate in the #3 position. If the assembly is now too long (it will not
engage behind the barrel shoulder, but rides up onto the barrel's major
diameter), go back to the last position tried with the shim plate, and
complete the M203 attachment.

8. When the optimum position of the shim plate is established:

a. If necessary, hold the retaining spring out of the way and depress
plunger (4) to unlock latch lever (5).

b. Rotate latch arm (3) over the carbine barrel.

0031 00-9
USE OF QUICK RELEASE BRACKET -
MOUNTING TO M4 CARBINE (Cont) 0031 00

c. Catch hook (6) in the hole of latch arm (3).

d. Rotate latch lever (5) down.

e. Depress plunger (4). Make sure the retaining spring does not
engage the plunger during this step.

f. Squeeze latch lever (5) fully closed (which allows plunger (4) to be
released and snap forward). This will hold latch lever in the fully
closed/locked position.

0031 00-10
M 4 A 1 C A R B IN E
B A R R E L C U T O U T
(S H A D E D F O R
C L A R IT Y )
S ID E V IE W

7 5

3 6
4
F R O N T
M U Z Z L E V IE W S
2 M J 0 5 6

0031 00-11
USE OF QUICK RELEASE BRACKET -
MOUNTING TO M4 CARBINE (Cont) 0031 00

NOTE
In its final motion, the latch lever may require very firm pressure
against the bracket to allow the plunger to snap back into place,
locking the latch lever closed. In some instances, finger pressure
alone against the latch lever will not be sufficient to fully close it.
When this occurs, use the side of the bayonet stud for extra leverage
against the latch lever.

g. Rotate the M203 trigger guard (7) to engage the lip of the
magazine well.

0031 00-12
9. If forward and back motion is detected with the shim plate set to its #3
notch, remove the M203 from the carbine. Remove and re-insert the
shim plate with its #4 position up. Note that the #4 position is
indicated by three dots stamped adjacent to its shim plate cutout, and
that this side of the shim plate faces the muzzle.
# 4 P O S IT IO N

F R O N T
(M U Z Z L E )
V IE W

D E P R E S S P L U N G E R T O R E M O V E / IN S T A L L T H E
5 -P O S IT IO N A D J U S T M E N T S H IM P L A T E
2 M J 0 5 7

0031 00-13
USE OF QUICK RELEASE BRACKET -
MOUNTING TO M4 CARBINE (Cont) 0031 00

10. If the #5 or maximum position is required, insert the shim plate as

illustrated below.

# 5 P O S IT IO N
(B A C K S ID E O F A D J U S T M E N T )
S H IM P L A T E F A C E S T H E M U Z Z L E

F R O N T
(M U Z Z L E )
V IE W

D E P R E S S P L U N G E R T O R E M O V E / IN S T A L L T H E
5 -P O S IT IO N A D J U S T M E N T S H IM P L A T E 2 M J 0 5 8

0031 00-14
CAUTION
When detaching the M203 for cleaning, inspection, or lubrication,
check and note the position of the shim plate for ease of
re-attachment.

END OF WORK PACKAGE

0031 00-15/16 blank

USE OF QUICK RELEASE BRACKET -
MOUNTING TO M16A4 RIFLE 0032 00

Principle of the Five-Position Shim Plate

The basic overall length between the barrel nut roll pin at the rear of the
M203 receiver and the starting position shim plate cutout surface at the front
is approximately 11 in. (28 cm). As noted in step 4, some sliding motion may
be detectable between the rifle barrel stop and the front of the five-position
shim plate at the starting, or minimum, overall length cutout position.

Subsequent re-insertion of the five-position shim plate to its #2, #3, #4, or
maximum (fifth) length position (see step 1) will slightly increase the overall
length of the assembly beyond the basic 11 in. (28 cm), and therefore tend to
minimize or eliminate any sliding motion between the barrel stop and the
five-position shim plate.

0032 00-1
USE OF QUICK RELEASE BRACKET -
MOUNTING TO M16A4 RIFLE (Cont) 0032 00

The following steps describe checking for sliding motion with the #2 notch up,
and against the rifle barrel stop. If the #2 position does not minimize the
sliding motion, repeat the procedure with the #3 notch up and so on. If the
fifth or maximum position is desired, note that the "back" or smooth face of
the shim plate is oriented towards the muzzle. Do not be concerned if only a
small amount of sliding motion is still detectable with the shim plate in its
apparently optimum setting, because the latch arm will compensate for this
when it is closed and locked.

NOTE
Endurance testing indicated that it may be necessary to switch to
another shim plate position after several thousand rounds have been
fired. The unit armorer should check for excessive sliding motion
each time the shim plate is removed for cleaning/lubrication and the
M203 is remounted to the carbine.

0032 00-2
Mounting Procedure
1. Compare the following illustration with the quick release bracket (1) to
become familiar with all positions of the five-position shim plate (2).
S T A R T IN G P O S IT IO N F IF T H O R
(A L L D O T S M A X IM U M L E F T S ID E F R O N T
F A C IN G M U Z Z L E P O S IT IO N (B A C K V IE W V IE W
2 D O T C U R V E D F A C IN G M U Z Z L E )
S ID E D O W N )

F R O N T S ID E B A C K
# 3 P O S IT IO N
# 2 P O S IT IO N # 4 P O S IT IO N

F R O N T
(M U Z Z L E )
V IE W

2 M J 0 5 9

0032 00-3
USE OF QUICK RELEASE BRACKET -
MOUNTING TO M16A4 RIFLE (Cont) 0032 00

2. Set the five-position shim plate in the bracket to the minimum position
as illustrated, with the 2 dots down and facing the muzzle.

0032 00-4
2

F R O N T
(M U Z Z L E )
V IE W

1 F U L L Y D E P R E S S P L U N G E R
T O IN S T A L L / R E M O V E
T H E S H IM P L A T E
2 M J 0 6 0

0032 00-5
USE OF QUICK RELEASE BRACKET -
MOUNTING TO M16A4 RIFLE (Cont) 0032 00

3. If present, remove the lower rail of the M5 Adapter Rail System from
the M16A4 rifle. Confirm that the barrel stop is installed inside the
handguard cap. Move the rear of the M203 receiver into position
around the rifle barrel. Confirm that latch arm (3) of the bracket is
fully open. Rotate the muzzle end of the M203 towards the rifle barrel
while sliding the M203 firmly to the rear. Visually confirm that the roll
pin in the rear of the M203 receiver engages the rifle barrel nut at the
six o'clock position notch.

0032 00-6
3

2 M J 0 6 1

0032 00-7
USE OF QUICK RELEASE BRACKET -
MOUNTING TO M16A4 RIFLE (Cont) 0032 00

4. Firmly hold the M203 in position/back against the rifle barrel nut,
while also holding the muzzle end of the M203 against the rifle's barrel
stop. Try to slide the M203 back and forth if possible, and note the
distance of any sliding motion. Some motion may be detectable with
the shim plate in its starting position.

5. Remove the M203 w/quick release bracket from the rifle. Depress
plunger (4), withdraw the shim plate and re-insert it in the #2 position
(see step 1). Note that the #2 position is indicated by a single dot
stamped on its shim plate cutout, and that this side of the shim plate
faces the muzzle.

6. Re-mount the M203 w/quick release bracket to the rifle's barrel nut and
barrel stop. Attempt to slide the M203 from front to rear.

0032 00-8
7. If forward and back motion is detected, repeat step 6 with the #3 notch
against the rifle barrel stop. If the assembly is now too long (it will not
engage behind the barrel stop), go back to the last position tried with
the shim plate, and complete the M203 attachment process.

8. When the optimum position of the shim plate is established:

a. Carefully work latch arm (3) between the rifle barrel and the gas
tube.

b. Hold the retaining spring away from plunger (4) and depress
plunger to unlock latch lever (5).

c. Catch hook (6) in the hole of latch arm (3).

d. Rotate latch lever (5) down.

0032 00-9
USE OF QUICK RELEASE BRACKET -
MOUNTING TO M16A4 RIFLE (Cont) 0032 00

e. Depress plunger (4). Make sure the retaining spring does not
engage the plunger during this step.

f. Squeeze latch lever (5) fully closed (which allows the plunger (4) to
be released and snap forward). This will hold latch lever in the
fully closed/locked position.

0032 00-10
S ID E V IE W

3 6
4
F R O N T
M U Z Z L E V IE W S 2 M J 0 6 2

0032 00-11
USE OF QUICK RELEASE BRACKET -
MOUNTING TO M16A4 RIFLE (Cont) 0032 00

NOTE
In its final motion, the latch lever may require very firm pressure
against the bracket to allow the plunger to snap back into place,
locking the latch lever closed. In some instances, finger pressure
alone against the latch lever will not be sufficient to fully close it.
When this occurs, use the side of the bayonet stud for extra leverage
against the latch lever.

g. Rotate M203 trigger guard (7) to engage the lip of the magazine
well.

0032 00-12
9. If forward and back motion is detected with the shim plate set to its #3
notch, remove the M203 from the rifle. Remove and re-insert the shim
plate with its #4 position up. Note that the #4 position is indicated by
three dots stamped adjacent to its shim plate cutout, and that this side
of the shim plate faces the muzzle.
# 4 P O S IT IO N

F R O N T
(M U Z Z L E )
V IE W

D E P R E S S P L U N G E R T O R E M O V E / IN S T A L L T H E
5 -P O S IT IO N A D J U S T M E N T S H IM P L A T E 2 M J 0 6 3

0032 00-13
USE OF QUICK RELEASE BRACKET -
MOUNTING TO M16A4 RIFLE (Cont) 0032 00

10. If the #5 maximum position is required, insert the shim plate as

illustrated.

# 5 P O S IT IO N

F R O N T
(M U Z Z L E )
V IE W

D E P R E S S P L U N G E R T O R E M O V E / IN S T A L L
T H E 5 -P O S IT IO N A D J U S T M E N T S H IM P L A T E
2 M J 0 6 4

0032 00-14
CAUTION
When detaching the M203 for cleaning, inspection, or lubrication,
check and note the position of the shim plate for ease of
re-attachment.

END OF WORK PACKAGE

0032 00-15/16 blank

MOUNTING LEAF SIGHT AND RAIL GRABBER ASSEMBLY 0033 00

NOTE
When mounted to the carbine, the recoil lug of the rail grabber will
be located in slot "T24" on the M4 Adapter Rail.

When mounted to the rifle, the recoil lug of the rail grabber will be
located in slot "T38" on the M5 Adapter Rail.

1. Turn the torque limiting knob of the rail grabber counterclockwise until
it stops.

2. Align the recoil lug of the rail grabber with the appropriate recoil slot.

3. Make sure the rail grabber is flush with the rail; then turn the torque
limiting knob clockwise until it clicks twice.
END OF WORK PACKAGE

0033 00-1/2 blank

AMMUNITION MARKING INFORMATION 0034 00

GENERAL INFORMATION

WARNING
Do not fire ammunition not made for use in the M203 grenade
launcher. Doing so will result in injury to, or death of, personnel.

Hearing protection is required for the user and all adjacent

personnel on firing range, when using M585 cartridge.

The only types of ammunition authorized for use in the grenade launcher are
contained in this work package. If ammunition is shown, it is authorized.

The authorized types of ammunition are listed by their color coding, classes,
arming ranges, and special information where required.

0034 00-1
AMMUNITION MARKING INFORMATION (Cont) 0034 00

If ammunition fails to fire in the weapon, turn it in to unit armorer for

disposition.

TYPES OF AMMUNITION

40-mm Ammunition Training Practice Rounds

WARNING
The M407A1 practice round fuze arms between 14 to 27 meters (46
to 89 ft).

The danger radius of practice grenades is 20 meters (66 ft).

0034 00-2
NOTE
The M781 practice round has an inert projectile; however, it does
contain a propelling charge.

No DUMMY ammunition is supplied for this weapon.

0034 00-3
AMMUNITION MARKING INFORMATION (Cont) 0034 00

G re y
o r b lu e
L ig h t b lu e
G re e n o r
b lu e

G re e n G re e n

M 4 0 7 A 1 M 7 8 1
2 M J 0 6 6
2 M J 0 6 5

0034 00-4
40-MM AMMUNITION MULTIPLE PROJECTILE ROUND AND CHEMICAL
ROUNDS
Chemical Round (Tactical CS)
G re y

WARNING R e d b a n d

The M651 arms between 10 to 30 meters

(33 to 99 ft).

O liv e

M 6 5 1
2 M J 0 6 7

0034 00-5
AMMUNITION MARKING INFORMATION (Cont) 0034 00

Multiple Projectile Round (Buckshot)

WARNING
When firing M576 cartridge from the M203 grenade launcher, be
sure to aim at the foot of the target.

NOTE
The multiple projectile round contains no mechanical-type fuze.

0034 00-6
B la c k

G re e n

M 5 7 6
2 M J 0 6 8

0034 00-7
AMMUNITION MARKING INFORMATION (Cont) 0034 00

40-mm Ammunition High Explosive (HE) Service

WARNING
The danger radius of the High Explosive (HE) grenades is 165
meters (541 ft). The M386, M397, M397A1, M406, and M433 rounds
arm within 14 to 27 meters (46 to 89 ft). The M381 and M441
rounds arm within 2.4 to 3 meters (8 to 10 ft).

0034 00-8
G o ld G o ld G o ld

G re e n
G re e n G re e n

G re e n G re e n G re e n

J U M P U P H E D P H E
F R A G M E N T A T IO N D U A L M 3 8 1 , M 4 0 6
M 3 9 7 P U R P O S E M 3 8 6 , M 4 4 1
M 3 9 7 A 1 M 4 3 3 2 M J 0 6 9

0034 00-9
AMMUNITION MARKING INFORMATION (Cont) 0034 00

40-mm Ammunition Pyrotechnic Signal and Spotting Rounds

R A IS E D L E T T E R
D E N O T E S C O L O R
C O L O R O F O G IV E IS
5 D O T S O N S T A R C O L O R O F S M O K E S M O K E C O L O R
C L U S T E R O N L Y
B A N D
S T A R C L U S T E R G R O U N D
W H IT E - M 5 8 5 S M O K E S M O K E
L ig h t
C A N O P Y M A R K E R
S T A R G re e n
Y E L L O W- M 6 7 6 L ig h t R E D - M 7 1 3
P A R A C H U T E W H IT E - M 6 8 0 G R E E N - M 7 1 5
L ig h t G re e n
W H IT E - M 5 8 3 R E D - M 6 8 2 Y E L L O W - M 7 1 6
W h ite W H IT E - M 5 8 3 A 1 G re e n
G R E E N - M 6 6 1 G re e n
G re e n R E D - M 6 6 2 G re e n

2 M J 0 7 0

0034 00-10
40-mm M1006 Non-Lethal Cartridge

L ig h t g r e e n

B la c k

W h ite

2 M J 0 7 1

WARNING
Failure to precisely follow the operator instructions over-packed with
the M1006 Non-Lethal Cartridge may result in target fatalities and
operator injuries.

0034 00-11
AMMUNITION MARKING INFORMATION (Cont) 0034 00

CARE AND HANDLING

Aluminum cases are easily dented and may be hard to chamber and extract.
Be careful! None of these rounds contain a mechanical-type fuze. Keep
ammunition dry, clean, and free of grease, sand, mud, snow, and ice.

END OF WORK PACKAGE

0034 00-12
CHAPTER 5

SUPPORTING INFORMATION
REFERENCES 0035 00

SCOPE

This work package lists all field manuals, technical manuals, and Army
regulations referenced in this manual.

FIELD MANUALS

FM 3-87 Nuclear, Biological, and Chemical (NBC)

Reconnaissance and Decontamination Operations
(How To Fight)
FM 21-11 First Aid for Soldiers
FM 21-40 NBC (Nuclear, Biological, and Chemical) Defense

0035 00-1
REFERENCES (Cont) 0035 00

MISCELLANEOUS PUBLICATIONS

CTA 8-100 Army Medical Department Expendable/Durable Items

CTA 50-970 Expendable/Durable Items (Except Medical, Class V,
Repair Parts, and Heraldic Items)
DA Form 2404 Equipment Inspection and Maintenance Worksheet
DA PAM 738-750 Functional Users Manual for the Army Maintenance
Management System (TAMMS)
SF 368 Product Quality Deficiency Report

0035 00-2
TECHNICAL MANUALS

TM 3-220 Chemical, Biological, and Radiological (CBR)

Decontamination
TM 750-244-7 Procedures for Destruction of Equipment in Federal
Supply Classifications 1000, 1005, 1010, 1015, 1020,
1025, 1030, 1055, 1090, and 1095 to Prevent Enemy
Use
END OF WORK PACKAGE

0035 00-3/4 blank

COMPONENTS OF END ITEM (COEI) AND BASIC ISSUE
ITEMS (BII) LISTS 0036 00

INTRODUCTION

Scope

This work package lists COEI and BII for the M203 grenade launcher to help
you inventory items for safe and efficient operation of the equipment.

General

The COEI and BII information is divided into the following lists:

0036 00-1
COMPONENTS OF END ITEM (COEI) AND BASIC ISSUE
ITEMS (BII) LISTS (Cont) 0036 00

Components of End Item (COEI). This list is for information purposes only
and is not authority to requisition replacements. These items are part of the
M203 grenade launcher. As part of the end item, these items must be with
the end item whenever it is issued or transferred between property accounts.
Items of COEI are removed and separately packaged for transportation or
shipment only when necessary. Illustrations are furnished to help you find
and identify the items.

0036 00-2
Basic Issue Items (BII). These essential items are required to place the M203
grenade launcher in operation, to operate it, and to do emergency repairs.
Although shipped separately packaged, BII must be with the M203 grenade
launcher during operation and when it is transferred between property
accounts. Listing these items is your authority to request/requisition them
for replacement based on authorization of the end item by the TOE/MTOE.
Illustrations are furnished to help you find and identify the items.

0036 00-3
COMPONENTS OF END ITEM (COEI) AND BASIC ISSUE
ITEMS (BII) LISTS (Cont) 0036 00

Explanation of Columns in the COEI List and BII List

Column (1) - Illus Number. Gives you the number of the item illustrated.

Column (2) - National Stock Number (NSN). Identifies the stock number of
the item to be used for requisitioning purposes.

Column (3) - Description, CAGEC, and Part Number. Identifies the Federal
item name (in all capital letters) followed by a minimum description. The
stowage location of COEI and BII is also included in this column. The last
line below the description is the CAGEC (Commercial and Government
Entity Code) (in parentheses) and the part number.

0036 00-4
Column (4) - Usable On Code. When applicable, gives you a code if the item
you need is not the same for different models of equipment.

Column (5) - Unit of Measure (U/M). Indicates the physical measurement or

count of the item as issued per the National Stock Number shown in column
(2).

Column (6) - Qty Rqr. Indicates the quantity required.

0036 00-5
COMPONENTS OF END ITEM (COEI) AND BASIC ISSUE
ITEMS (BII) LISTS (Cont) 0036 00

COMPONENTS OF END ITEM (COEI) LIST

1
5 0
7
1 0 0 5
1
1 2 0 2 5

3 2 0
3 5 0
3 7 5
4 0 0

2 M J 0 7 2

0036 00-6
Table 1. Components of End Item.

(1) (2) (3) (4) (5) (6)

NATIONAL DESCRIPTION,
ILLUS STOCK CAGEC, AND USABLE QTY
NUMBER NUMBER PART NUMBER ON CODE U/M RQR
1 1010-01-442-2313 SIGHT, RIFLE EA 1
GRENADE
LAUNCHER:
Quadrant
(19200) 12598114

0036 00-7
COMPONENTS OF END ITEM (COEI) AND BASIC ISSUE
ITEMS (BII) LISTS (Cont) 0036 00

BASIC ISSUE ITEMS (BII) LIST

2 M J 0 7 3

0036 00-8
Table 2. Basic Issue Items List.

(1) (2) (3) (4) (5) (6)

NATIONAL DESCRIPTION,
ILLUS STOCK CAGEC, AND USABLE QTY
NUMBER NUMBER PART NUMBER ON CODE U/M RQR
1 OPERATOR'S EA 1
MANUAL FOR
M203 GRENADE
LAUNCHER:
TM 9-1010-221-10

END OF WORK PACKAGE

0036 00-9/10 blank

ADDITIONAL AUTHORIZATION LIST (AAL) 0037 00

INTRODUCTION

Scope

This work package lists additional items you are authorized for the support of
the M203 grenade launcher.

General

This list identifies items that do not have to accompany the M203 grenade
launcher and that do not have to be turned in with it. These items are all
authorized to you by CTA, MTOE, TDA, or JTA.

0037 00-1
ADDITIONAL AUTHORIZATION LIST (AAL) (Cont) 0037 00

Explanation of Columns in the AAL

Column (1) - National Stock Number (NSN). Identifies the stock number of
the item to be used for requisitioning purposes.

Column (2) - Description, Commercial and Government Entity Code

(CAGEC), and Part Number (P/N). Identifies the Federal item name (in all
capital letters) followed by a minimum description when needed. The last
line below the description is the CAGEC (in parentheses) and the part
number.

Column (3) - Usable On Code. When applicable, gives you a code if the item
you need is not the same for different models of equipment.

0037 00-2
Column (4) - Unit of Measure (U/M). Indicates the physical measurement or
count of the item as issued per the National Stock Number shown in column
(1).

Column (5) - Qty Recm. Indicates the quantity recommended.

0037 00-3
ADDITIONAL AUTHORIZATION LIST (AAL) (Cont) 0037 00

Table 1. Additional Authorization List.

(1) (2) (3) (4) (5)

NATIONAL
STOCK DESCRIPTION, CAGEC, USABLE QTY
NUMBER AND PART NUMBER ON CODE U/M RECM
ASSEMBLY, LEAF SIGHT EA 1
AND RAIL GRABBER:
(19200) 12598117
BRACKET, QUICK EA 1
RELEASE:
(19200) 12973116

0037 00-4
(1) (2) (3) (4) (5)
NATIONAL
STOCK DESCRIPTION, CAGEC, USABLE QTY
NUMBER AND PART NUMBER ON CODE U/M RECM
1010-00-474-5466 BRUSH, BORE CLEANING: EA 1
(19204) 7790665
1010-00-474-5462 CASE, SMALL ARMS: EA 1
(19205) 7790630
1010-00-474-5465 THONG, BORE BRUSH: EA 1
(19204) 7790631

END OF WORK PACKAGE

0037 00-5/6 blank

EXPENDABLE AND DURABLE ITEMS LIST 0038 00

INTRODUCTION

Scope

This work package lists expendable and durable items that you will need to
operate and maintain the M203 grenade launcher. This list is for
information only and is not authority to requisition the listed items. These
items are authorized to you by CTA 50-970, Expendable/Durable Items
(Except Medical, Class V, Repair Parts, and Heraldic Items), or CTA 8-100,
Army Medical Department Expendable/Durable Items.

Explanation of Columns in the Expendable/Durable Items List

Column (1) - Item Number. This number is assigned to the entry in the list
and is referenced in the narrative instructions to identify the item (e.g., "Use
CLP (item 2, WP 0038 00).").

0038 00-1
EXPENDABLE AND DURABLE ITEMS LIST (Cont) 0038 00

Column (2) - Level. This column identifies the lowest level of maintenance
that requires the listed item (C - Operator/Crew, O - Unit/AVUM).

Column (3) - National Stock Number (NSN). This is the NSN assigned to the
item which you can use to requisition it.

Column (4) - Item Name, Description, Commercial and Government Entity

Code (CAGEC), and Part Number (P/N). This column provides the other
information you need to identify the item.

Column (5) - Unit of Measure (U/M). This code shows the physical
measurement or count of an item, such as gallon, dozen, gross, etc.

0038 00-2
Table 1. Expendable and Durable Items List.

(1) (2) (3) (4) (5)

NATIONAL ITEM NAME,
ITEM STOCK DESCRIPTION, CAGEC,
NUMBER LEVEL NUMBER AND PART NUMBER U/M
1 C 1005-00-242-5687 BOTTLE ASSEMBLY, EA
CYLINDRICAL:
(19204) 8448444
2 C CLEANER, LUBRICANT,
AND PRESERVATIVE:
(CLP)
9150-01-102-1473 1/2 oz bottle OZ
(81349) MIL-L-63460

0038 00-3
EXPENDABLE AND DURABLE ITEMS LIST (Cont) 0038 00

Table 1. Expendable and Durable Items List (Cont).

(1) (2) (3) (4) (5)

NATIONAL ITEM NAME,
ITEM STOCK DESCRIPTION, CAGEC,
NUMBER LEVEL NUMBER AND PART NUMBER U/M
3 CLEANING COMPOUND,
RIFLE BORE: small arms
bore cleaning solution (RBC)
C 6850-00-224-6656 2-oz (59.15-ml) bottle OZ
O 6850-00-224-6657 8-oz (236.59-ml) can OZ
O 6850-00-224-6663 1-gal. (3.79-l) can GL
(81349) MIL-PRF-372

0038 00-4
(1) (2) (3) (4) (5)
NATIONAL ITEM NAME,
ITEM STOCK DESCRIPTION, CAGEC,
NUMBER LEVEL NUMBER AND PART NUMBER U/M
4 O 9150-00-292-9689 LUBRICATING OIL, QT
WEAPONS: (LAW)
1-qt (0.95-l) can
(81349) MIL-L-14107
5 LUBRICATING OIL,
WEAPONS: (LSA),
semifluid
C 9150-00-935-6597 2-oz (59.15-ml) plastic bottle OZ
C 9150-00-889-3522 4-oz (118.30-ml) bottle OZ
O 9150-00-687-4241 1-qt (0.95-l) can QT
O 9150-00-753-4686 1-gal. (3.79-l) can GL
(81349) MIL-L-46000

0038 00-5
EXPENDABLE AND DURABLE ITEMS LIST (Cont) 0038 00

Table 1. Expendable and Durable Items List (Cont).

(1) (2) (3) (4) (5)

NATIONAL ITEM NAME,
ITEM STOCK DESCRIPTION, CAGEC,
NUMBER LEVEL NUMBER AND PART NUMBER U/M
6 C RAG, WIPING: cotton
7920-00-205-1711 50 lb bdl EA
(58536) AA-531

0038 00-6
(1) (2) (3) (4) (5)
NATIONAL ITEM NAME,
ITEM STOCK DESCRIPTION, CAGEC,
NUMBER LEVEL NUMBER AND PART NUMBER U/M
7 O SOLVENT, DRY GL
CLEANING (SD):
6850-01-474-2319 1-gal. (3.78-l) can
6850-01-474-2317 5-gal. (18.93-l) can
6850-01-474-2316 55-gal. (208.18-l) barrel
(81349) MIL-PRF-680
TYPE II

END OF WORK PACKAGE

0038 00-7/8 blank

ALPHABETICAL INDEX

Subject WP Sequence No. - Page No.

Additional Authorization List........................................ 0037 00-1

Ammunition Marking Information................................ 0034 00-1
Assembly......................................................................... 0026 00-1

Barrel Latch.................................................................... 0006 00-1

Basic Issue Items (BII) List ........................................... 0036 00-8

1
ALPHABETICAL INDEX (Cont)

Subject WP Sequence No. - Page No.

Care and Handling (Ammunition)................................. 0034 00-12

Cleaning.......................................................................... 0025 00-1
Cleaning/Lubrication (Quick Release Bracket)............. 0029 00-1
Clearing .......................................................................... 0012 00-1
Components of End Item (COEI) List ........................... 0036 00-6
Corrosion Prevention and Control (CPC) ...................... 0001 00-6

2
Subject WP Sequence No. - Page No.

Description and Use of Operator Controls and

Indicators - Barrel Latch ............................................ 0006 00-1
Description and Use of Operator Controls and
Indicators - Leaf Sight ................................................ 0004 00-1
Description and Use of Operator Controls and
Indicators - Quadrant Sight ....................................... 0005 00-1
Description and Use of Operator Controls and
Indicators - Trigger and Safety .................................. 0007 00-1
Destruction of Army Materiel to Prevent Enemy
Use............................................................................... 0001 00-7
Disassembly .................................................................... 0024 00-1
Dismounting from M16A4 Rifle or M4/M4A1
Carbine (Quick Release Bracket) ............................... 0030 00-1
3
ALPHABETICAL INDEX (Cont)

Subject WP Sequence No. - Page No.

Equipment Characteristics, Capabilities, and

Features ...................................................................... 0002 00-1
Equipment Data ............................................................. 0002 00-4
Expendable and Durable Items List.............................. 0038 00-1

Field Manuals................................................................. 0035 00-1

Firing Techniques........................................................... 0009 00-1

4
Subject WP Sequence No. - Page No.

General Information....................................................... 0001 00-1

General Information (Ammunition) .............................. 0034 00-1

Hangfire .......................................................................... 0013 00-1

Inspection of Installed Items ......................................... 0023 00-1

5
ALPHABETICAL INDEX (Cont)

Subject WP Sequence No. - Page No.

Leaf Sight........................................................................ 0004 00-1, 0009 00-4

Loading and Firing ........................................................ 0011 00-1
Location and Description of Major Components ........... 0002 00-1
Lubrication ..................................................................... 0027 00-1
Lubrication Instructions ................................................ 0022 00-1

6
Subject WP Sequence No. - Page No.

Maintenance Forms, Records, and Reports................... 0001 00-5

Miscellaneous Publications............................................ 0035 00-2
Misfire ............................................................................. 0014 00-1
Model Number and Equipment Name........................... 0001 00-4
Mounting Leaf Sight and Rail Grabber Assembly........ 0033 00-1
Mounting to M16A4 Rifle (Quick Release Bracket)...... 0032 00-1
Mounting to M4 Carbine (Quick Release Bracket) ....... 0031 00-1

Nuclear, Biological, and Chemical (NBC)

Decontamination Procedures ..................................... 0017 00-1

7
ALPHABETICAL INDEX (Cont)

Subject WP Sequence No. - Page No.

Operation Under Unusual Conditions -

Unusual Environment/Weather................................. 0016 00-1
Operation Under Unusual Conditions -
Nuclear, Biological, and Chemical (NBC)
Decontamination Procedures ..................................... 0017 00-1
Operation Under Usual Conditions -
Clearing....................................................................... 0012 00-1
Operation Under Usual Conditions -
Firing Techniques ....................................................... 0009 00-1
Operation Under Usual Conditions - Hangfire ............. 0013 00-1
Operation Under Usual Conditions -
Loading and Firing ..................................................... 0011 00-1

8
Subject WP Sequence No. - Page No.

O (Cont)

Operation Under Usual Conditions - Misfire................ 0014 00-1

Operation Under Usual Conditions -
Preparation for Firing ................................................ 0008 00-1
Operation Under Usual Conditions -
Range Estimating ....................................................... 0010 00-1
Operation Under Usual Conditions -
Unloading .................................................................... 0015 00-1
Operational Checkout and Troubleshooting
Procedures................................................................... 0019 00-1

9
ALPHABETICAL INDEX (Cont)

Subject WP Sequence No. - Page No.

PMCS Procedures........................................................... 0020 00-2, 0021 00-1

Preparation for Firing ................................................... 0008 00-1
Preparation for Storage or Shipment ............................ 0001 00-7
Preventive Maintenance Checks and Services
(PMCS) Introduction................................................... 0020 00-1
Purpose of Equipment ................................................... 0001 00-4

Quadrant Sight............................................................... 0005 00-1, 0009 00-6

10
Subject WP Sequence No. - Page No.

Range Estimating........................................................... 0010 00-1

References....................................................................... 0035 00-1
Reporting Equipment Improvement
Recommendations (EIR) ............................................. 0001 00-5

Scope ............................................................................... 0001 00-4

11
ALPHABETICAL INDEX (Cont)

Subject WP Sequence No. - Page No.

Technical Manuals ......................................................... 0035 00-3

Test and Inspection ........................................................ 0028 00-1
Theory of Operation ....................................................... 0003 00-1
Trigger and Safety.......................................................... 0007 00-1
Troubleshooting Index.................................................... 0018 00-1
Troubleshooting Procedures........................................... 0019 00-1
Type of Manual............................................................... 0001 00-4
Types of Ammunition ..................................................... 0034 00-2

12
Subject WP Sequence No. - Page No.

Unloading ....................................................................... 0015 00-1

Unusual Environment/Weather .................................... 0016 00-1
Use of Quick Release Bracket:
Cleaning/Lubrication .................................................. 0029 00-1
Dismounting from M16A4 Rifle or M4/M4A1
Carbine ........................................................................ 0030 00-1
Mounting to M4 Carbine ............................................ 0031 00-1
Mounting to M16A4 Rifle ........................................... 0032 00-1

Zeroing ............................................................................ 0010 00-2

13/14 blank
By Order of the Secretary of the Army:

ERIC K. SHINSEKI
General, United States Army
Chief of Staff

0114102

Distribution: To be distributed in accordance with the Initial Distribution

Number (IDN) 400544 requirements for TM 9-1010-221-10.
ARMY TM 9-1010-221-10
AIR FORCE TO 11W3-9-4-1
MARINE CORPS TM 07700B-10
NAVY SW370-AE-OPI-010

PIN: 026103-000
This fine document...

Was brought to you by me:

Liberated Manuals -- free army and government manuals

Why do I do it? I am tired of sleazy CD-ROM sellers, who take publicly

available information, slap “watermarks” and other junk on it, and sell it.
Those masters of search engine manipulation make sure that their sites that
sell free information, come up first in search engines. They did not create it...
They did not even scan it... Why should they get your money? Why are not
letting you give those free manuals to your friends?

I am setting this document FREE. This document was made by the US

Government and is NOT protected by Copyright. Feel free to share,
republish, sell and so on.

I am not asking you for donations, fees or handouts. If you can, please
provide a link to liberatedmanuals.com, so that free manuals come up first in
search engines:

<A HREF=http://www.liberatedmanuals.com/>Free Military and Government Manuals</A>

– Sincerely
Igor Chudov
http://igor.chudov.com/
– Chicago Machinery Movers