The USP was HK's first polymer-frame pistol and the first handgun designed from the ground up for .40 S&W, then scaled to 9mm and .45 ACP. A modular control system allows nine different trigger/safety configurations. Type: Semi-Auto Pistol Action: Double-Action/Single-Action Caliber: 9mm Luger Capacity: 15 Year introduced: 1993, Germany Weight: 26.5 oz Overall length: 7.64" Status: Active Military use: Yes Intended use: duty, service, competition