Izhevsk Arsenal M91/30. Arrow-in-triangle proof mark. Most common Mosin-Nagant variant. Type: Rifle Action: Bolt-Action Caliber: 7.62x54mmR Capacity: 5 Year introduced: 1891, Soviet Union Weight: 8.8 oz Overall length: 48.5" Status: Discontinued Military use: Yes Intended use: Infantry, Sniper