Semi-automatic civilian version of the HK UMP45 submachine gun with an 8-inch barrel. Blowback operated polymer frame. Designed as a lighter successor to the MP5 using polymer construction and a wider range of pistol calibers. Type: Pistol Action: Semi-Automatic Caliber: .45 ACP Capacity: 12 Year introduced: 2000, Germany Weight: 5.3 oz Overall length: 17.7" Status: Discontinued Intended use: PDW / Law Enforcement