The HK USP in .45 ACP uses a slightly larger frame than the 9mm and .40 S&W variants to accommodate the larger cartridge, with a 12-round capacity. The recoil buffer is particularly beneficial in the .45 ACP variant, noticeably reducing felt recoil compared to other .45 ACP duty pistols. Adopted by German GSG 9 and various special operations units. Considered one of the softest-shooting full-size .45 ACP pistols. Type: Pistol Action: DA/SA Caliber: .45 ACP Capacity: 12 Year introduced: 1995, Germany Weight: 30.36 oz Overall length: 7.87" Status: Active Military use: Yes Intended use: duty, carry