The Mortar Company.

81 MM
SYSTEM
M8 81 MM MORTAR
81 MM AMMUNITION FAMILY
FIRE CONTROL SYSTEM
THE COMPREHENSIVE
81 MM SYSTEM
Developed by Hirtenberger Defence Systems (HDS), the 81mm M8 mortar system comprises a 81mm bipod mortar
(ground mount or vehicle mount) a full family of ammunition natures, a sighting system and modular digital fire control
system. With a maximum range of 6 500m (M8 S-1365) and high sustained rate of fire the M8 provides organic indirect
fire support to manoeuvre forces. The M8 is man portable ground mounted mortar and also has a vehicle mount for
integration into armoured vehicles, when integrated with a digital fire control system, accuracy is increased significantly
increasing operational effectiveness.

BIPOD BARREL AND BREECH CAP

The bipod provides front support The smooth bore barrel is made of high strength ESR
for the barrel and carries the gears special steel, it is forged, heat treated and machined
and mechanisms necessary to lay to close tolerances. The barrel is offered in two
the mortar. The asymmetric design ballistic lengths, 1165mm and 1365mm. The inside
of the bipod allows for the plan leg of the barrel rim is chamfered to allow easy insertion
to be adjusted to cater for ground of rounds. The breech cap screws directly into the
slope, providing a more stable base of the barrel and houses the firing pin. We offer
firing platform. The recoil buffers two barrel options: one with finned lower half for
aides in absorbing recoil force. All enhanced cooling, and another with a smooth surface
mechanisms on the bipod are to accommodate the attachment of a digital aiming
sealed against dust and moisture system (MDAS). The MDAS (Mortar Digital Aiming
intrusion. System) is an electronic aiming device for setting up
and aligning the mortar. Further information can be
found in the MDAS brochure.

BASE PLATE SIGHT UNIT

The base late forms a stable platform for the mortar to fire from and takes all the shock The sight is used for laying the mortar. The M8 has a
on firing, it is made from high strength aluminium alloy. The rotating socket is designed to NATO dovetail bracket designed into the bipod and
securely hold the breech plug and permit 360° firing. The bottom of the base plate has four will accept any sight unit designed for use with a NATO
feet designed to stop the base plate from moving rearwards during firing. The base plate of dovetail bracket.
the M8 provides an extremely stable platform to fire from in support of manoeuvre forces.

VEHICLE MOUNT
The 81mm mortar vehicle mount is designed to be fitted directly into the
Pandur 6x6 armoured mortar carrier, and can also be fitted into any other
armoured vehicle with minor modifications. The mount consists of a
turntable and mono pod and is capable of 3600 rotation, it is completely
mechanical, allowing it to continue to function when the vehicle, or power
unit, suffers complete power lose. When integrated with a pointing system
(MDAS), and fire control system (ARC-Fire) a mounted mortar unit can quickly
react to the tactical situation by rapidly deploying to firing positions, accurately
engaging targets and quickly redeploying to avoid counter battery fire.
FIRE CONTROL SYSTEM

ARC-FIRE TM INTEGRATED FIRE CONTROL SYSTEM

ARC-Fire is a fully integrated digital fire control C2 system that links commanders, fire support coordination centres, forward observers, fire direction
centres and weapons. The system functions on laptops, tablets and handheld computers, each computer may also operate as a stand alone ballistic
computer. ARC-Fire is optimised to support shoot and scoot operations.

SYSTEM CAPABILITIES
• Coalition Operations
• BMS Integration
• NATO Doctrine (AArty P1)
• VMF ECP1 Compliant
• Coordination
• Common Operating Picture
• Smart Note Synchronisation
• Planning
• Execution
• Fire Direction
• Weapons
• Smoothbore/Rifled Mortars
• Towed/Self-propelled Mortars /Artillery
• Sensors
• Laser Range Finder
• Acquisition Radar Systems
• Meteorology Systems
• UAV

For further information refer to the ARC-Fire brochure.

TECHNICAL DATA M8 – 1 165* M8 – 1 365*

Calibre 81 mm 81 mm
Max. rate of fire 30 / min 30 / min

Weights

Total 36.8 kg 41.7 kg

Barrel 12.5 kg 17.4 kg
Bipod 13.3 kg 13.3 kg
Base plate 11.0 kg 11.0 kg
Dimensions
Length of barrel (overall) 1 280 mm 1 482 mm
Ballistic length 1 165 mm 1 365 mm
Diameter of base plate 547 mm 547 mm

* both barrel lengths are available with S - smooth surface and R - ripped surface
| Due to continuous technical improvement this product is subject to modification
81 MM MORTAR AMMUNITION

AMMUNITION WITH „HE“ TYPE BALLISTICS

81 MM 81 MM 81 MM
PRACTICE SRIPP SMK-TTC
Mk6 Mk1 Mk6
Filler Filler Filler
Inert Inert Titanium tetrachloride
Terminal effect Terminal effect Terminal effect
Impact signature Short Range Inert Practice Extraordinary fast
(only with live fuze). Projectile - Reuseable with a generation of cold
max distance of ~100 m smoke.

81 MM 81 MM 81 MM
HE-TNT HE-TNT SMK-WP
Mk6 PD Mk6 PROX. Mk6
Qualified in NATO Qualified in NATO Filler
Filler Filler White phosphorus
TNT TNT Terminal effect
Terminal effect Terminal effect Screening by fast
Natural fragmentation Natural fragmentation smoke generation.

PYROTECHNIC AMMUNITION WITH IDENTICAL BALLISTICS

81 MM 81 MM 81 MM
SMK-RP ILL-VIS ILL-IR
Mk6 Mk6 Mk6
Qualified in NATO Qualified in NATO Qualified in NATO
Filler Terminal effect Terminal effect
Red phosphorus Luminosity: 930 000 cd Illumination duration: 40 sec.
Terminal effect Illumination duration: 40 sec. Descent rate: ~5 m / s
Smoke generation Descent rate: ~5 m / s High infrared emission,
Smoke duration: ~100 sec. low visible emission.

PRACTICE HE-TNT SMK-WP SMK-TTC ILL-VIS ILL-IR SMK-RP

81 MM Mk6 Mk6 Mk6 Mk6 Mk6 Mk6 Mk6
PD DM111 A4 PD DM111 A4 PD DM111 A4 PD DM111 A4 MTSQ DM93 MTSQ DM93 MTSQ DM93

Length 488 mm 488 mm 488 mm 488 mm 635 mm 635 mm 635 mm

Weight 4.00 kg 4.00 kg 4.00 kg 4.00 kg 3.8 kg 3.8 kg 3.8 kg

HE -TNT Mk6 / PRACTICE Mk6 MAX. RANGE GAS PRESSURE
SMK-WP Mk6 / SMK-TTC Mk6 1 365 MM BARREL MAX.

Charge 0 710 m 10 MPa

Charge 4 4 955 m 65 MPa
Charge 5 5 745 m 80 MPa
Charge 6 6 235 m 105 MPa
Charge 7 6 500 m 130 MPa

ILL-VIS Mk6 / ILL-IR Mk6

SMK-RP Mk6
EJECTION HEIGHT 350 M

Charge 1 1 450 m 20 MPa

Charge 4 4 325 m 60 MPa
Charge 5 4 955 m 80 MPa
Charge 6 5 310 m 105 MPa

SHELL BODY PROPULSION IGNITION

• Optimised aerodynamic shape SYSTEMS CARTRIDGE
• Improved external ballistics
• Increased range
• Charge container with bent rim • Watertight aluminium
• Increased mechanical stability design
• Closed design
• No unintended loss during • Stable ballistics
• No entrance of hot gases
• Body material handling • Improved storage

• Special cast iron

• Watertight design capability
• Stable ballistics • Reliable function in wet
• High number of fragments
• Improved storage capability environment
• Increased combat efficiency
• Reliable function in wet
conditions
• Latest celluloid composition
• Improved combustion
characteristics
MONOBLOC • No sticky residues

DESIGN OF • No sticking bombs

during firing
FIN TAIL • Latest propellant
composition
• No corrosion • Improved energy
• No break-up during firing • Improved muzzle velocity
• Weapon cannot be damaged • Reduced gas pressure
• Improved storage capability • Greater range capability

SPECIAL
• Bomb removal tool

Various available fuzes Spindle shaped design Canister shaped design

Hirtenberger Defence Europe GmbH
Leobersdorfer Strasse 31-33
2552 Hirtenberg / Austria
Phone: +43 2256 811 84-101
Fax: +43 2256 818 07
E-Mail: [email protected]

Hirtenberger Defence Systems Kft.

Szent István út. 16. 3 em. 313.
H-8100 Várpalota / Hungary
E-Mail: [email protected]

hds.hirtenberger.com

Vol. 01/ 2024 | subject to change