Heritage Rough Rider configured specifically for .22 WMR (Magnum Rimfire) with 4.75-inch barrel. The .22 WMR cylinder offers significantly improved terminal performance for small game and pest control over .22 LR. Many Rough Rider sets include both caliber cylinders. Type: Revolver Action: Single-Action Caliber: 22 WMR Capacity: 6 Year introduced: 2000, USA Weight: 31 oz Overall length: 10.25" Status: Active Intended use: Recreational, Small Game, Plinking