The Probert Encyclopaedia of Warfare

SUOMI M1944

The Suomi M1944 is a Finnish blowback operated sub-machine-gun based upon the Soviet PPS-43, the principal difference being that the Suomi M1944 fires the 9 mm Parabellum cartridge and is designed to accept the two standard magazines - box and drum - of the Suomi M1931 sub-machine-gun. The Suomi M1944 has a rate of fire of 650 rounds-per-minute, an effective range of 200 meters, and was produced from 1944 to 1945, remaining in service until at least 1980.
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