The Ruger SR22 .22 LR Pistol is a usa-made semi-automatic pistol chambered in .22 LR, introduced in 2012. Primary use: self_defense, sport. Type: Pistol Action: Semi-Automatic Caliber: .22 LR Capacity: 10 Year introduced: 2012, USA Weight: 30 oz Overall length: 9.5" Status: Active Intended use: self_defense, sport