Type Semi-automatic rifle Place of origin United States Service history In service 1941–1945 1941–1961 (worldwide) Wars World War IIBay of Pigs Invasion Production history Designer Melvin Johnson Designed 1939 Manufacturer Johnson Automatics, Inc. No. built ~70 000 cost per unit $125 Specifications Weight 9.5 lb (4.31 kg) … Continue reading M1941 Johnson rifle