The HK45 Tactical is the suppressor-ready variant of the HK45, adding a threaded, extended barrel and O-ring seal. The Tactical designation indicates the same precision barrel-to-slide fit as the USP Tactical series. Available in standard and Compact frame sizes. Chosen by SOCOM evaluators during testing for the next-generation special operations sidearm. Type: Pistol Action: Semi-Automatic Caliber: .45 ACP Capacity: 10 Year introduced: 2008, Germany Weight: 29.1 oz Overall length: 7.95" Status: Active Military use: Yes Intended use: military, tactical, special_operations