The Cooper Model 57M in .17 HMR applies the same Montana semi-custom precision standards to the varmint cartridge with a 22-inch stainless barrel and premium stock options. Type: Rifle Action: Bolt-Action Caliber: .17 HMR Capacity: 5 Year introduced: 2003, USA Weight: 7.5 oz Overall length: 40.5" Status: Active Intended use: Varmint/Precision