Heckler and Koch 81000352: Enhanced versions of the USP, the USP Tactical model is designed for users who need the features found on the HK Mark 23, but in a more compact and lighter weight pistol. It utilizes an extended threaded barrel with a rubber O-ring and polygonal bore and adjustable match grade trigger. The USP Tactical also features an one-piece machined steel slide, polymer frame with mounting grooves, ambidextrous magazine release lever, and patented Lock-Out safety device. This V1 45 ACP model has a black frame with blued slide, adjustable target sights, and comes with two 10-round magazines.