The Colt Diamondback was a premium .22 caliber revolver built on the D-frame with a ventilated rib barrel and Python-style action finishing, bridging plinker and target shooter markets. Type: Revolver Action: DA/SA Caliber: .22 LR Capacity: 6 Year introduced: 1966, USA Weight: 24 oz Overall length: 9" Status: Discontinued Intended use: Target Shooting, Plinking, Collector