The ArmaLite AR-7 is a usa-made semi-automatic rifle chambered in .22 LR, introduced in 1959. Primary use: self_defense, sport. Type: Rifle Action: Semi-Automatic Caliber: .22 LR Capacity: 10 Year introduced: 1959, USA Weight: 104 oz Overall length: 43.5" Status: Discontinued Intended use: self_defense, sport