82-PM-41
The 82-PM-41, M-41 or the 82-mm mortar Model 1941 was a Soviet 82-millimeter calibre mortar developed during the Second World War as an infantry battalion mortar, and which began production in 1941.
Design
It differed from the Model 1937 by the presence of a removable wheel base, by the arched construction base plate, and also a different two-legged construction. Wheels were slipped over the semi-axis of the bipod feet and removed during firing.Design improvements were made to reduce weight and production cost, and improve manoeuvrability. The ballistic data of the Model 1941 mortar were analogous to the Model 1937. The 82-mm mortar Model 1941 was more convenient to transport than the Model 1937, but was less steady during firing and had a worse centre of gravity.
To correct shortcomings of the 82-mm mortar Model 1941, it was modernised during initial production; the construction of the bipod, wheel and fastening of the sight was changed. The modernised mortar was called the 82-mm mortar Model 1943.