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FN M3M



Overview


FN M3M

GAU-21/A machine gun fitted onto a UH-1Y Venom helicopter.

Source: US Marine Corps (LCpl Jose Gonzalez) - © Public domain

Origin
Belgium
Type
Heavy machine gun
Entered service
1989
Status
In service
Development
1980's
Developer
Belgium - Fabrique Nationale
Production
Late 1980's - present
Producer
Belgium - Fabrique Nationale
United States - Fabrique Nationale
Designations
GAU-21/A
M3M in US military service

Details


M3M

Human operated variant for use on a flexible mount. Intended for use on helicopters, but can also be fitted to vehicles or ships.

M3P

Remote operated variant for use in a fixed mount. Operated via solenoid trigger. Used in helicopter gun pods and on vehicles, such as the Avenger anti-aircraft system.

Facts M3M M3P
General
Origin
Belgium
Type
Heavy machine gun
Caliber
Caliber
12.7x99mm NATO
Magazine
Belt fed, right or left hand
Barrel length
914 mm
Rifling
8 grooves, 381 mm right hand twist
Muzzle velocity
880 m/s
Operation
Action
Short recoil, open bolt
Fire selector
0 - F
Rate of fire
950 - 1.100 rpm
Barrel life
10.000 rounds
Dimensions
Length
1.52 m
Weight
35.8 kg gun only
Sights
Iron sights
No iron sights, optics fitted onto weapon mount

Related articles


Browning M2HB

The M3M and M3P are modified versions of the original Browning M2HB heavy machine gun.