The Ruger Standard .22 LR is a usa-made semi-automatic pistol chambered in .22 LR, introduced in 1949. Primary use: self_defense, sport. Type: Pistol Action: Semi-Automatic Caliber: .22 LR Capacity: 10 Year introduced: 1949, USA Weight: 30 oz Overall length: 9.5" Status: Discontinued Intended use: self_defense, sport