Direct-blowback .22 LR in an AR-15 chassis. Olympic Arms built one of the earliest dedicated .22 LR AR-15 platforms before CMMG and Ruger entered the market. Type: Rifle Action: Semi-Automatic Caliber: .22 LR Capacity: 30 Year introduced: 1997, USA Weight: 76.8 oz Overall length: 35" Status: Discontinued Intended use: Target, Training