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Browning Machine Gun, Cal. .50, M2, HB
Machine gun M2 1.jpg
M2HB machine gun
Type Heavy machine gun
Place of origin  United States
Service history
In service 1921
M2HB from 1933–present
Used by United States, and several others
Wars World War II, Korean War, Vietnam War, Cambodian Civil War, Falklands War, Desert Storm, Somali Civil War, Iraqi Freedom, Operation Enduring Freedom, South African Border War
Production history
Designed 1918
Produced 1933–present (M2HB)
Weight 38 kg (84 lb), 58 kg (128 lb) with tripod and T&E
Length 1650 mm (65 in)
Barrel length 1143 mm (45 in)

Cartridge .50 BMG
Action Short recoil-operated
Rate of fire 450–600 rounds/min (M2HB)
750–850 rounds/min (M2 aircraft gun)
Muzzle velocity 2,910 feet per second (M33 Ball) (887.1 m/s)
Feed system Belt-fed (M2 or M9 links)

The M2 Machine Gun, or Browning .50 Caliber Machine Gun is a heavy machine gun. It was nicknamed Ma Deuce by US troops or simply called "fifty-cal." due to its caliber.

John Moses Browning (1855–1926) of Ogden, Utah, was the inventor. His military arms were considered to be outstanding. German Field Marshal Hermann Göring said, "If the Luftwaffe (German Air Force) had the Browning .50-caliber, the Battle of Britain would have turned out differently".  view more...