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The UMP was designed in the 1990s by Heckler & Koch (HK), as a cheaper, lighter alternative to the MP5, [5] which made heavy use of polymers. [6] The UMP first entered production in 2000. [ 2 ] It was designed primarily for use by American military and law enforcement units, [ 7 ] as the MP5 was not available in .45 ACP, a round which was ...
UMP (Universale Maschinenpistole) HK UMP9, HK UMP40, HK UMP45 Cartridges. ... (5.62) Shotguns. HK CAWS; References This page was last edited on 10 ...
The conversion reduced the MP5's rate of fire to 650 rounds per minute. It was ultimately replaced by the MP5 .22 LR in 2021. MP5 6.5×25mm Rechambering Kit Rechambering kit to convert an MP5 to 6.5×25mm CBJ, which was proposed in the 2000s but never released. It would have allowed an MP5 to be rechambered simply by switching its barrel.
The counter-terrorist unit GSG-9, which was established after the incident, adopted the H&K MP5 as their service submachine gun instead of the Walther MP. As the MP5 became more prevalent, it would begin to eclipse the Walther MP's sales until the Walther product was discontinued. [5] In addition, exports to other countries were also carried out.
It also cited less sensitivity to extreme temperatures for the 5.7×28mm and cited a greater potential risk of barrel erosion with the 4.6×30mm. [7] In addition, the group pointed out that 5.7×28mm is close to the 5.56×45mm NATO by its design and manufacture process, allowing it to be manufactured on existing production lines. [ 7 ]
Using a similar recoil reduction system, the H&K Mk 23 pistol fired more than 30,000 high pressure (+P) cartridges and 6,000 proof loads without damage or excessive wear to any major components. Abuse and function-testing of USPs have seen more than 20,000 rounds of .40 S&W fired without a component failure.
20 N (4.5 lb f) 14 mm (0.55 in) Same as V0, but the hammer has no spur, and there is no decocker button; therefore, the only way to release the cocked mainspring is to pull the trigger over the empty chamber. Employing a light Trigger Return Spring (TRS), it is referred to as "light LEM." V2 CDA aka LEM 32.5 N (7.3 lb f) 14 mm (0.55 in)
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