A larger cartridge produces more recoil, and makes it harder to control in fully automatic firing. 40 S&W) than other submachine guns, to provide more stopping power against unarmoured targets, with slightly lower effectiveness at longer ranges. Īs originally designed, the UMP is chambered for larger cartridges (. However, the simple blowback design of the UMP makes it less controllable than the MP5. The closed bolt increases the weapon's accuracy, which is particularly desirable in a law enforcement context.
The UMP is a blowback-operated, magazine-fed submachine gun firing from a closed bolt. military in recent conflicts.Ī Heckler & Koch MP5A5 (from top), MP5A4 and UMP9, on display at a Navy armory exhibition 45 ACP were officially purchased by the 5th Special Forces Group of the United States Army Special Forces, with some of the weapons seeing limited service in the early years of the Iraqi insurgency, making them among the small number of submachine guns deployed by the U.S. The UMP has been adopted for use by various countries including Brazil, Canada, and the United States. Heckler & Koch developed the UMP as a lighter and cheaper successor to the MP5, though both remain in production. The Heckler & Koch UMP ( Universale Maschinenpistole, German for "Universal Machine Pistol") is a submachine gun developed and manufactured by Heckler & Koch.
25-round detachable straight box magazine ( UMP45).
30-round detachable straight box magazine ( UMP40).30-round detachable curved box magazine ( UMP9).Heckler & Koch UMP45 equipped with a KAC vertical foregrip