The .22 WMR Mini Revolver adds magnum rimfire power to the NAA Mini platform with a 1-inch barrel. Includes a second .22 LR cylinder for less expensive practice ammunition. Type: Revolver Action: Single-Action Caliber: .22 WMR Capacity: 5 Year introduced: 1976, USA Weight: 4 oz Overall length: 3.5" Status: Active Intended use: Backup Gun, Concealed Carry