M2HB

The M2 Machine Gun (Browning .50 Caliber Machine Gun, Ma Deuce) is a heavy machine gun designed towards the end of World War I by John Browning. It was nicknamed Ma Deuce by US troops or simply called "fifty-cal" in reference to its caliber. The design has had many specific designations; the official designation for the infantry type is Browning Machine Gun, Cal. .50, M2, HB, Flexible. The Browning .50 machine gun has been used extensively as a vehicle weapon and for aircraft armament by the United States from the 1920s to the present day. It was heavily used during World War II, the Korean War, the Vietnam War, as well as during operations in Iraq in the 1990s and 2000s. It is the primary heavy machine gun of NATO countries, and has been used by many other countries. It is still in use today. It was very similar in design to the smaller M1919 Browning machine gun .30-06 Springfield.