The Model 351PD pairs an aluminum alloy frame with an ultra-light scandium cylinder to reach just 10.8 ounces. The exposed hammer allows single-action fire, distinguishing it from the hammerless 351C. Type: Revolver Action: DA/SA Caliber: .22 Mag Capacity: 7 Year introduced: 2004, USA Weight: 10.8 oz Overall length: 6.3" Status: Discontinued Intended use: Carry, Trail, Backup