Model 597 in .22 Winchester Magnum Rimfire with stainless steel barrel and receiver and synthetic stock. The most weather-resistant 597 Magnum configuration. The .22 WMR chambering requires a smaller-diameter bolt face. Type: Rifle Action: Semi-Auto Caliber: .22 WMR Capacity: 8 Year introduced: 2000, USA Weight: 60 oz Overall length: 40" Status: Discontinued Intended use: Hunting, Plinking / Range Training