The Various German State Arsenals MG45 Machine Gun is a germany-made full-auto machine gun chambered in 7.92x57mm, introduced in 1945. Primary use: military. Type: Machine Gun Action: Full-Auto Caliber: 7.92x57mm Capacity: 100 Year introduced: 1945, Germany Weight: 128 oz Overall length: 44" Status: Discontinued Military use: Yes Intended use: military