Cooper Arms Model 57 Classic in 22 WMR. Cooper offers the Model 57 in 22 Winchester Magnum Rimfire for hunters and shooters who want more energy than the 22 LR in the same precision rimfire platform. The 22 WMR in Classic-grade oil-finish walnut provides practical small-game and varmint capability with the aesthetics of Cooper's traditional walnut-and-steel production. A rare and unusual rimfire configuration from the Montana maker. Type: Rifle Action: Bolt-Action Caliber: 22 Winchester Magnum Rimfire Capacity: 1 Year introduced: 1998, USA Weight: 56 oz Overall length: 41" Status: Active Intended use: small game hunting, varmint hunting