Military Factory logo
Icon of a dollar sign
Icon of military officer saluting
Icon of F-15 Eagle military combat fighter aircraft
Icon of Abrams Main Battle Tank
Icon of AK-47 assault rifle
Icon of navy warships

Fabrique Nationale FN M3P

Belt-Fed Vehicle Heavy Machine Gun (HMG)

Fabrique Nationale FN M3P

Belt-Fed Vehicle Heavy Machine Gun (HMG)


The Fabrique Nationale FN M3P is a modernized form of the Browning M2 .50 caliber heavy machine gun - intended for vehicle, watercraft and aircraft mounting.
National Flag Graphic
ORIGIN: Belgium
YEAR: 2009
MANUFACTURER(S): Fabrique Nationale (FN herstal) - Belgium
OPERATORS: Belgium; Germany; United Kingdom; United States

Common measurements, and their respective conversions, are shown when possible. Calibers listed may be model/chambering dependent.
ACTION: Full-Automatic; Belt-Fed
CALIBER(S): 12.7x99mm NATO
LENGTH (OVERALL): 1,650 millimeters (64.96 inches)
LENGTH (BARREL): 1,150 millimeters (45.28 inches)
WEIGHT (UNLOADED): 77.16 pounds (35.00 kilograms)
MUZZLE VELOCITY: 2,900 feet-per-second (884 meters-per-second)
RATE-OF-FIRE: 1,025 rounds-per-minute
RANGE (EFFECTIVE): 6,000 feet (1,829 meters; 2,000 yards)

Series Model Variants
• FN M3P - Base Series Designation; open-air design.
• FN HMP250 LCC - Podded variant; 250-round feeding with links collector.
• FN HMP400 LC - Podded variant; 400-round feeding with links collector.
• FN HMP400 LCC - Podded variant; 400-round feeding with links and cases collector.
• FN RMP LC - Podded variant; 250-round feeding with 3 x 2.75" tube-launched rockets.


Detailing the development and operational history of the Fabrique Nationale FN M3P Belt-Fed Vehicle Heavy Machine Gun (HMG).  Entry last updated on 12/16/2016. Authored by Staff Writer. Content ©
The Fabrique Nationale (FN Herstal) FN M3P is a vehicle machine gun based on the hugely successful Browning M2 .50 caliber heavy machine gun series. The M3P is simply a modernized form intended for use on trainable vehicle mountings or as a fixed vehicle/aircraft gun (podded or open-air). It can be manually-fired or remotely fired (via solenoid) which sufficiently broadens battlefield applications. In the former, it can be sat upon a trainable pintle mounting and used as a normal open-air, air-cooled machine gun (defensive application or on a vehicle/watercraft for offensive purposes). In the latter, it can serve through a remote weapons station installation, as a coaxial machine gun on a tank (or other wheeled/tracked armored vehicle) or in "podded" form and slung under the wing of an aircraft - light strike or helicopter - used in conjunction with the aircraft's existing weapons software suite.

The FN M3P showcases a design faithful to the original Browning with its rectangular receiver, large ejection port and feed units and perforated barrel for air cooling. A large, cylindrical muzzle brake is fitted. Belt-feeding is standard (from left or right of the receiver) as is full-automatic fire. The weapon is chambered for the proven 12.7x99mm NATO standard heavy cartridge and fires at a rate nearing 1,025 rounds per minute. its overall construction provides a weight-savings measure over the original Browning M2.

The FN M3P is marketed across several designated variants beyond the base open-air gun mounting. These include the podded FN HMP250 (250-rounds), the FN HMP400 (400-rounds) and FN RMP (250-rounds with 3 x 2.75" rockets underslung).