The Ruger 10/22 Carbine in .22 LR with 18.5-inch barrel. The best-selling semi-automatic .22 LR rifle in American history. A simple, reliable rotary-magazine rimfire carbine with an enormous aftermarket ecosystem that allows virtually unlimited customization. Type: Semi-Auto Rifle Action: Striker-Fired Caliber: .22 LR Capacity: 10 Year introduced: 1964, USA Weight: 5 oz Overall length: 37" Status: Active Intended use: Plinking, Training, Small Game, Competition