The Johnson Automatics M1941 Johnson LMG is a usa-made recoil-operated machine gun chambered in .30-06 Springfield, introduced in 1941. Primary use: military, sport. Type: Machine Gun Action: Recoil-Operated Caliber: .30-06 Springfield Capacity: 20 Year introduced: 1941, USA Weight: 256 oz Overall length: 47.5" Status: Discontinued Military use: Yes Intended use: military, sport