M1 mortar

M1 mortar
G.I.'s of the 92nd Infantry Division fire an M1 mortar at Massa in Italy during World War II.
Type	Infantry mortar
Place of origin	United States
Service history
In service	1935–1952[1]
Used by	United States Vietnam Other users
Wars	World War II Korean War Algerian War[2] Vietnam War
Specifications
Mass	see general data
Length	3 ft 11 in (1.19 m)
Crew	8 (squad leader, gunner, assistant gunner, 5 ammunition bearers)
Shell	see ammunition
Caliber	81 mm (3.2 in)
Rate of fire	18 rpm sustained 30-35 rpm maximum
Muzzle velocity	700 ft/s (210 m/s)
Maximum firing range	3,300 yd (3,000 m)
Sights	M4

The M1 mortar is an American 81 millimeter caliber mortar. It was based on the French Brandt mortar. The M1 mortar was used from before World War II until the 1950s when it was replaced by the lighter and longer ranged M29 mortar.