Browning's air-cooled medium machine gun that served as the primary American light machine gun from WWI through Korea and Vietnam in various configurations. A scaled-down variant of the M1917 water-cooled gun, the M1919A4 was the standard US vehicle-mounted and tripod-mounted support weapon of WWII. Type: Rifle Action: Full-Auto Caliber: .30-06 Sprg Year introduced: 1919, USA Weight: 31 oz Overall length: 53" Status: Discontinued Military use: Yes Intended use: Military, Collecting, NFA