Marlin's semi-auto rimfire chambered in the short-lived .17 Mach 2 cartridge, derived from a necked-down .22 LR case. Discontinued in 2010 when Hornady ceased .17 HM2 ammunition production. Type: Rifle Action: Semi-Automatic Caliber: .17 HM2 Capacity: 7 Year introduced: 2004, USA Weight: 4.5 oz Overall length: 36.5" Status: Discontinued Intended use: Varminting,Plinking