The USP45 Compact Tactical is a suppressor-ready variant of the USP Compact .45 ACP, adding a threaded barrel and O-ring barrel seal (borrowed directly from the Mark 23) for improved suppressor performance. It bridges the gap between the full-size USP Tactical and the compact frame. Limited production made it relatively rare. Type: Semi-Auto Pistol Action: DA/SA Caliber: .45 ACP Capacity: 8 Year introduced: 2004, Germany Weight: 27.5 oz Overall length: 7.52" Status: Discontinued Intended use: Concealed Carry, Suppressor Host, Tactical