The HK45 is a modern .45 ACP polymer-frame pistol designed as an ergonomic successor to the USP45, incorporating the P2000 and P30 interchangeable grip system. Features the same O-ring barrel for suppressed use and the full HK modular trigger group in a refined, thinner package than the older USP. Type: Pistol Action: Semi-Automatic Caliber: .45 ACP Capacity: 10 Year introduced: 2007, Germany Weight: 28.48 oz Overall length: 7.52" Status: Active Intended use: Service, Duty, Military