1930's - after World War 2
- UNIT COST
Good rate of fire
The M1 is a conventional 81mm mortar of US origin. It is a slightly modified Brandt mortar and was adopted before World War 2. The M1 was used until the 1950's until it was replaced in US service with the newer M29.
The design is based on the French Brandt Mle 27/31 mortar. It consists of the barrel, a rectangular baseplate and bipod with sight assembly.
The M1 fires a variety of 81mm shells. The maximum range is 3 km. The maximum rate of fire is 30 rounds per minute, with 18 rounds per minute being normal.
The M1 can be disassembled in three pieces that can be transported by infantry over short distances. The M1 mortar has also been mounted on the M4 and M21 halftracks.
The main user of the M1 was the United States. It has been exported to many nations around the world. With most nations it has been replaced by newer designs, but the M1 still remains in use today.
The M1 is a conventional muzzle loaded smoothbore 81mm mortar. It is a slightly modified Brandt Mle 27/31 mortar. It can be disassembled in three pieces, being the barrel, the baseplate and the bipod with sight assembly.
|Ordnance||81mm smoothbore mortar|
|Rate of fire||30 - 35 rpm (max), 18 rpm (sustained)|
|Length||1.21 m overall|