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Semi-automatic variant of the MP5 intended for the law enforcement and military markets, introduced in 1986 to meet a Federal Bureau of Investigation request for a "9mm semi-automatic carbine". Unlike the HK94, the semi-automatic MP5 variant for the civilian market, the MP5SF retains its standard 8.9-inch barrel.
The Lusa marries some concepts from the HK MP5 and Uzi submachine gun without being too similar to either. The complete trigger housing is nearly identical to that of the MP5, however the other internals are greatly simplified. The bolt and carrier are one welded unit, and the action is a simple blowback, unlike the roller-delay system of the MP5.
Designed to tame the recoil and muzzle rise of an AR-15 semi automatic rifle chambered in 5.56×45mm NATO (.223). [68] It fired 7900 rounds during testing on semi-auto. [69] During a test on full auto, 10 magazines of 62 grain green tip 5.56 rounds were fired without any issues. [69]
The UMP is available in four trigger group configurations, featuring different combinations of semi-automatic, 2-round burst, fully automatic, and safe settings. It features a side-folding buttstock to reduce its length during transport. When the last round of the UMP is fired, the bolt locks open, and can be released via a catch on the left side.
A Mini Uzi and a Heckler & Koch MP5K, two common submachine guns. A submachine gun (SMG) is a magazine-fed automatic carbine designed to fire handgun cartridges.The term "submachine gun" was coined by John T. Thompson, the inventor of the Thompson submachine gun, [1] to describe its design concept as an automatic firearm with notably less firepower than a machine gun (hence the prefix "sub-").
Within the Table of Organization and Equipment for both the United States Army and the United States Marine Corps, these two classes of weapons are considered as crew-served; the operator of the weapon has an assistant who carries additional ammunition and associated equipment, acts as a spotter, and is also fully qualified in the operation of ...
During World War I, a machine pistol version of the Steyr M1912 called the Repetierpistole M1912/P16 was produced. It used a 16-round fixed magazine loaded via 8 round stripper clips, a detachable shoulder stock and a rather large exposed semi-auto/full-auto selector switch on the right side of the frame above the trigger (down = semi & up = full). [3]
The HK51 has no real standards, but is usually a cut down and modified G3A3, or its semi-automatic clones the HK41 and HK91, modified to take MP5 stock and accessories. It is usually fitted with a collapsible stock; with a 211 mm (8.31-inch) long barrel; it is relatively small at 589 mm (23.17 inches) with the stock retracted and 780 mm (30.72 ...