M1 mortar

U.S. Soldiers fire an M1 mortar at Massa in Italy during World War II
Type	Infantry mortar
Place of origin	United States
Service history
Used by	United States
Wars	World War II, Korean War
Specifications
Weight	see general data
Length	3 ft 11 in (1.19 m)
Caliber	81 millimetres (3.2 in)
Rate of fire	18 rpm sustained 30-35 rpm maximum
Muzzle velocity	700 ft/s (210 m/s)
Effective 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 World War II until the 1950s when it was replaced by the lighter and longer ranged M29 mortar.

Weight:

The M1 Mortar's shells sometimes used the same fuzes as the shells for the M2 60mm Mortar. An adapter collar was added to the smaller fuzes to allow them to fit the larger shells.