The .22 WMR version of the Cooper Model 57-M is the third caliber option in the Cooper rimfire lineup, providing an intermediate power level between the .22 LR and .17 HMR. The 22-inch match barrel provides the best accuracy the cartridge can deliver in a production rifle, and Cooper extends their rimfire accuracy guarantee to the .22 WMR configuration. Type: Rifle Action: Bolt-Action Caliber: .22 WMR Capacity: 5 Year introduced: 2010, USA Weight: 48 oz Overall length: 40" Status: Active Intended use: Hunting