The Mark II replaced the Mark I in 1982 with a bolt hold-open device and a redesigned magazine release. Produced for over 22 years in numerous configurations, it is the best-selling .22 pistol in American history. Type: Pistol Action: Semi-Automatic Caliber: .22 LR Capacity: 10 Year introduced: 1982, USA Weight: 35 oz Overall length: 8.75" Status: Discontinued Intended use: Target, Competition, Training