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Saturday, March 19, 2011

M2 Heavy Machine Gun

Browning Machine Gun, Cal. .50, M2, HB
Browning M2 "Ma Deuce"
M2HB heavy machine gun
Type Heavy machine gun
Place of origin  United States
Service history
In service M2HB from 1933–present
Used by See Users
Wars World War II
Korean War
First Indochina War
Suez Crisis
Vietnam War
Cambodian Civil War
Cambodian-Vietnamese War
Falklands War
South African Border War
United States invasion of Panama
Gulf War
Somali Civil War
Operation Medak Pocket
Afghanistan and Iraq wars
Production history
Designed 1918
Manufacturer Current: General Dynamics, Fabrique Nationale, US Ordnance, and Manroy Engineering
Former: Sabre Defence Industries, Colt's Patent Fire Arms Company, High Standard Company, Savage Arms Corporation, Buffalo Arms Corporation, General Motors Corporation (Frigidaire, AC Spark Plug, Saginaw Steering, and Brown-Lipe-Chappin Divisions), Kelsey Hayes Wheel Company, Springfield Armory, Wayne Pump Company, ERMCO, and Ramo Manufacturing
Produced 1921–present (M2HB)
Number built 3 million
Weight 38 kg (83.78 lb)
58 kg (127.87 lb) with tripod and T&E
Length 1,656 mm (65.2 in)
Barrel length 1,143 mm (45.0 in)

Cartridge .50 BMG (12.7x99mm NATO)
Action Short recoil-operated
Rate of fire 485-635 rounds/min (M2HB)
750–850 rounds/min (AN/M2)
1,200 rounds/min (AN/M3)
Muzzle velocity 2,910 feet/sec (887.1 m/s) for M33 ball
Effective range 2,000 m (2,187 yds)
Maximum range 6,770 m (7,400 yd)
Feed system Belt-fed (M2 or M9 links)


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