To commence fire one simply releases the cocking handle from its notch and then pulls the trigger. To avoid this, the MP5 cocking handle can be locked in the rear position in a specially purposed slot, allowing the bolt to stay in open position, with no cartridge in the chamber. The MP5 is fires only from a closed bolt for improved accuracy, but this does limit the amount of sustained fire available due to barrel overheating problems and resulting cooking-off of rounds in the chamber. The position levers, ambidextrous or not, are marked with letters, digits or icons. The trigger units on the MP5 are hinged to the receiver and are now available with multiple fire mode options, including 2 settings (Safe, Semi-auto), 3 settings (Safe, Semi-auto, Full Auto) or 4 (Safe, Semi, Limited burst of 2 or 3 rounds and Full auto). It shares the same basic design, with stamped steel receiver and same roller-delayed blowback action, derived from the post-war CETME rifles, originated by the German designer Ludwig Vorgrimler. The MP5 is really no more than a scaled-down version of the Heckler & Koch G3 battle rifle. It seems that no other modern SMG at this time can rival the MP5 in popularity as the UZI is not manufactured anymore. It’s based on the high quality and reliability of the gun, great single-shot accuracy (thanks to its closed bolt action), great flexibility of use and of course, good marketing. the German Army (Bundeswehr) did not originally adopt the MP5, probably for economical reasons, and turned instead to Belgian made UZI submachine guns! The only real historical rival to the MP5 in terms of its proliferation across the world, is the famous Israeli UZI submachine gun. Here’s a real head-scratcher. MP5 is still manufactured in Germany by Heckler & Koch itself, and also licensed out to Greece, Iran, Pakistan and Mexico. Over the years MP5 were adopted by huge numbers of police, security and military forces around the world, including the German police and border guard, British police and elite Army SAS units, American police, FBI, Navy and Marine Corps, and many, many others. The trigger units were also upgraded – from original stamped steel with plastic grip to all plastic units, integral with the grip, with various fire modes and markings. Other improvements made over that time concerned the magazines – early magazines were straight box type, later ones were of curved box type for improved reliability. Some years later HK slightly upgraded the design of the MP5, swapping the sights from flip-up open notch rear and blade front to drum-type diopter rear and hooded post front. The muzzle was also changed, the two slot muzzle compensator was changed to a three-lug QD silencer mount without a compensator. It was originally available in two forms – MP5 with fixed buttstock and MP5A1 with retractable buttstock. In 1966, the West German Police and Border Guard (‘Bundesgrenzschutz’) adopted the HK 54, designating it as the MP5. The Heckler und Koch MP5 submachine gun is perhaps the most famous and widespread firearm of its class to be developed since the Second World War.ĭevelopment of the MP5 began circa 1964 under the company designation HK MP-54, or simply HK 54. 40 Smith & Wesson (10x22mm), 10mm Auto (10x25) 9mm Luger - 9x19 Luger / Parabellum Heckler und Koch MP5 submachine gun (Germany) Note that both types of stocks are shown – fixed A2 type and retractable A3 type.Ĭlick here for an exploded view of the MP5 (65Kb JPEG) The visual difference between trigger units: left -earliest type stamped steel with plastic grip (converted from the semi-auto only civilian gun HK 94, with American markings on selector) middle – early type all-plastic with S-E-F markings right – most recent all plastic design of the ‘A4’ variation, with additional 3 round burst facility and icon markings. Retractable buttstock is of the A3 configuration. The barrel is threaded to accept US-made detachable sound suppressors, in addition to HK standard three-lug mounts. Featuring a plastic trigger group of the latest design, with ambidextrous selector lever and “icon” markings. A modern version developed for the US Navy. An early type stamped steel trigger group. A silenced version with integral suppressor and retractable stock of the A3 version. An earlier model with checkered handguard and a stamped steel S-E-F (in fact, S-1-A) trigger group. HK MP5A2 with fixed stock and plastic S-E-F trigger group. Note that the sights and the muzzle are different from the later models. The early MP5A1 adopted by the German police and Border Guard looked the same. HK MP-54, or HK 54 – a prototype submachine gun (1965).
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