The Volquartsen Ruger 22/45 series replacement target frame is constructed of lightweight aluminum and will fit the Mark 22/45. The stripped frame weighs 4 ounces and has a protective hard coat anodizing. This complete frame includes a CNC machined Target Trigger, wire EDM cut target hammer and sear, titanium disconnector, extended bolt release, and extended safety. The magazine disconnect has also been eliminated on this frame. This frame will accept any grip designed for the Ruger 22/45. 22/45 magazines must be used with this frame, it will not accept Mark II or MkIII magazines. Each assembled Volquartsen Custom frame leaves the factory with a crisp 2.25 pound trigger pull. Silver.FeaturesLightweight Aluminum, Bare Frame is only 4 ouncesCNC Machined Target TriggerWire EDM Cut Target Hammer and SearTitanium DisconnectorExtended SafetyExtended Bolt ReleaseAccepts 22/45 Grips (Not included)Works with Ruger 22/45 magazines