The Schmidt-Rubin K31 Swiss Carbine 7.5mm is a switzerland-made bolt-action rifle chambered in 7.5x55mm Swiss, introduced in 1931. Primary use: hunting, sport. Type: Rifle Action: Bolt-Action Caliber: 7.5x55mm Swiss Capacity: 5 Year introduced: 1931, Switzerland Weight: 128 oz Overall length: 43.5" Status: Discontinued Military use: Yes Intended use: hunting, sport