Mors submachine gun

Pistolet maszynowy wz.39 Mors (Mors is Latin for death, Polish for walrus) was a Polish submachine gun designed by Piotr Wilniewczyc and Jan Skrzypiński between 1936 and 1938. It was to have become the standard submachine gun of the Polish Army some time in the 1940s. However, its production was halted by the 1939 invasion of Poland and World War II.

The design was generally modelled after the German ERMA EMP-35. Common feature of both was a wooden butt and forward pistol grip, most noticeable difference was magazine sticking downwards in Mors instead of to the left side. The SMG was to be issued to some of the infantry units, as well as to tank crews and boarding parties of the Polish Navy and armoured trains. Later the idea of equipping tank crews was abandoned due to size. After extensive tests the construction proved to be reliable and durable. The first series was ordered in March 1939 and additional purchases was planned. However, until September 1939 the Fabryka Karabinów in Warsaw produced only 39 pieces, 3 of them being prototypes. After the start of hostilities, all were issued to one infantry battalion and were used with success during the battle for Warsaw.

Only 2 or 3 units survived: one in the Polish Army Museum in Warsaw (acquired from the Soviet Union in late 1980s), one in Russia and one probably in Budapest in museum.