The Model 48 is a K-frame revolver chambered in .22 Winchester Magnum Rimfire, built on the same platform as the .22 LR Model 17. The .22 WMR cartridge provides significantly more energy than .22 LR, extending the platform's utility to varmint hunting and pest control at distances where .22 LR falls short. Discontinued but well-regarded. Type: Revolver Action: Double-Action Caliber: .22 WMR Capacity: 6 Year introduced: 1959, USA Weight: 38.5 oz Overall length: 9.13" Status: Discontinued Intended use: target, varmint, utility