The Various German State Arsenals MG42 Machine Gun is a germany-made full-auto machine gun chambered in 7.92x57mm, introduced in 1942. Primary use: military. Type: Machine Gun Action: Full-Auto Caliber: 7.92x57mm Capacity: 100 Year introduced: 1942, Germany Weight: 400 oz Overall length: 48" Status: Discontinued Military use: Yes Intended use: military