The UMP (Universale Maschinenpistole, German for “Universal Submachine Gun”) is a submachine gun developed and manufactured by Heckler & Koch. The UMP has been adopted by various agencies such as the U.S. Customs and Border Protection. Heckler & Koch developed the UMP as a lighter and cheaper successor to the MP5, though both remain in production

The UMP is a blowback operated, magazine-fed submachine gun firing from a closed bolt.

As originally designed, the UMP is chambered for larger cartridges (.45 ACP and .40 S&W) than other submachine guns like the MP5, to provide more stopping power against unarmored targets (with slightly lower effectiveness at longer range) than the MP5 (largely offered in 9×19mm, albeit with short-lived production of 10mm Auto and .40 S&W variants). A larger cartridge produces more recoil, and makes control more difficult in fully automatic firing. To mitigate this, the cyclic rate of fire was reduced to 650 rounds/min (600 rounds/min for the UMP45), which makes it one of the slower firing submachine guns on the market

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Weight Without magazine:

  • 2.3 kilograms (5.2 lb) (UMP9/UMP40)
  • 2.5 kilograms (5.4 lb) (UMP45)

With unloaded magazine:

  • 2.5 kilograms (5.5 lb) (UMP9)
  • 2.55 kilograms (5.6 lb) (UMP40)
  • 2.65 kilograms (5.8 lb) (UMP45)
  • 450 mm (17.7 inches), stock folded
  • 690 mm (27.2 inches), stock extended
Barrel length 200 mm (8 inches)

  • .45 ACP (UMP45)
  • .40 S&W (UMP40)
  • 9×19mm Parabellum (UMP9)
Action Blowback, closed bolt
Rate of fire
  • 650 rounds per minute (UMP9/UMP40)
  • 600 rounds per minute (UMP45)
Muzzle velocity 285 m/s (935 ft/s) (.45 ACP)[1]
Effective firing range
  • 100 m (9×19mm Parabellum)
  • 65 m (.45 ACP)
Feed system
  • 30-round detachable box magazine (UMP9/UMP40)
  • 25-round detachable box magazine (UMP45)

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