Match Weight compensators are designed to fit Heckler & Koch – Mark 23, USP (full size), USP Elite, USP Expert, USPC (compact), HK45, HK45C (compact), P2000, P2000SK, P30L, P30, P30SK, VP40, VP9, and VP9SK with the options of steel or aluminum and with picatinny rail or without. The compensators will accommodate all all barrel lengths (standard, tactical or custom). Steel compensators weigh about 12oz. While the aluminum version weigh about 4oz. They all come with a black finish. H&K handgun not included. You are purchasing the compensator only. If you have any questions please feel free to submit them.