It fires in semi-automatic, 3-round burst, or sustained fire modes. The weapon operates on delayed blowback, using the patented H&K roller-locked bolt system. The weapon can be chambered for various cartridges, but usually for a 9x19mm round of pistol calibre. It was designed for reliability, ease of handling, and simple maintenance.
History
The MP5 was first produced in the 1960s as the HK54. The current name dates from when it was officially adopted by the West German government for use by its Police and Border Guard as the "Maschinepistole 5", or MP5 in 1966. It is currently in use by military and law enforcement units in more than fifty nations. There are around 120 variants of the MP5 available.
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