The MP5 is a You must login or register to view this content. You must login or register to view this content. of You must login or register to view this content. design, developed in the 1960s by a team of engineers from the You must login or register to view this content. arms manufacturer You must login or register to view this content. of You must login or register to view this content.. The company, motivated by the success of the You must login or register to view this content. You must login or register to view this content., developed a family of small arms consisting of four types of firearms (all based on a common G3 design layout and operating principle), where the first type was chambered in You must login or register to view this content., the second – using the You must login or register to view this content. round, third – the intermediate You must login or register to view this content. caliber and the fourth type – chambering the 9x19mm Parabellum You must login or register to view this content. cartridge. The MP5 (short for Maschinenpistole 5) was created within the fourth group of firearms, initially known as the HK54.
Work on the MP5 began in 1964 and scarcely two years later it was adopted by the You must login or register to view this content., border guard and army special forces. It is currently used by the armed forces and law enforcement units of over 40 different countries. The submachine guns are manufactured under license in several nations including: You must login or register to view this content. (Hellenic Arms Industry), You must login or register to view this content. (You must login or register to view this content.), You must login or register to view this content. (You must login or register to view this content.), You must login or register to view this content. (You must login or register to view this content.), You must login or register to view this content. (You must login or register to view this content.), You must login or register to view this content. (You must login or register to view this content.), and the You must login or register to view this content. (initially at You must login or register to view this content., later diverted to Heckler & Koch Great Britain). The MP5 remains one of the most widely deployed of all current submachine guns and has been developed into a family with numerous variants.



In the early 1970s You must login or register to view this content. introduced a conversion kit for the MP5 that enables it to use sporting ammunition (You must login or register to view this content.). This unit consists of a barrel insert, a bolt group and two 20-round magazines. This modification reduces the cyclic rate to 650 rounds/min.
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The roller-delayed locking mechanism.


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A You must login or register to view this content. fires the MP5.


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A view through the weapon's aperture sight.




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Technical patent drawing of the MPSD suppressor.


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MP5K-PDW.


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The MP5SD3.

• MP5A1: MP5 with endplate/receiver cap; "Navy"/"SEF" trigger group.
  
• MP5A2: Fixed stock, "Navy"/"SEF" trigger group.
  
• MP5A3: Retractable stock, "Navy"/"SEF" trigger group.
  
• MP5A4: Fixed buttstock, 3-round burst trigger group.
  
• MP5A5: Retractable buttstock, 3-round burst trigger group.
  
• MP5SFA2: "SF" denotes single-fire; fixed stock.
  
• MP5SFA3: MP5SFA2 with retractable stock.
  
• MP5-N: Model developed specifically for the You must login or register to view this content.. Ambidextrous "Navy" trigger group, 3-lug/threaded barrel for attaching a sound suppressor; retractable stock.
  
• MP5F: Model developed specifically for the You must login or register to view this content. military. Rubber-padded retractable stock, ambidextrous sling loops/bolts and internal modifications to handle high-pressure ammunition.
  
• MP5K: Short version of the MP5; "SEF" trigger group.
  
• MP5KA1: MP5K with smooth upper surface and small iron sights; "SEF" trigger group.
  
• MP5KA4: MP5K with 3-round burst trigger group.
  
• MP5KA5: MP5KA1 with 3-round burst trigger group.
  
• MP5K-N: MP5K with "Navy" trigger group and 3-lug/threaded barrel for mounting suppressors or other muzzle attachments.
  
• MP5K-PDW: Personal Defense Weapon; MP5K-N with added folding stock and 3-lug/threaded barrel for mounting of suppressors; "Navy" or 3-round burst trigger group. Introduced in 1991.
  
• MP5SD1: Integrated suppressor (Schalldämpfer), A1-type buttplate with sling loop; "Navy"/"SEF" trigger group.
  
• MP5SD2: Integrated suppressor (Schalldämpfer), fixed stock; "Navy"/"SEF" trigger group.
  
• MP5SD3: Integrated suppressor (Schalldämpfer), retractable stock; "Navy"/"SEF" trigger group.
  
• MP5SD4: MP5SD1 with 3-round burst trigger group.
  

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Spanish Navy special forces You must login or register to view this content. operators armed with MP5's.

• MP5SD5: MP5SD2 with 3-round burst trigger group.
  
• MP5SD6: MP5SD3 with 3-round burst trigger group.
  
• MP5SD-N: MP5SD with "Navy" trigger group and You must login or register to view this content. stainless steel suppressor; retractable stock.
  
• MP5/10: Chambered in You must login or register to view this content., available in various stock/trigger group configurations. It was produced from 1992 to 2000.
  
• MP5/40: Chambered in You must login or register to view this content., available in various stock/trigger group configurations. It was produced from 1992 to 2000.
  
• HK94: American import model of the MP5 with a 16 in barrel and special safe/semi-automatic trigger group, designed for civilian use. It was made from 1983 to 1989, in three different configurations.
  
• SP89: Sport Pistole M1989. Semi-automatic only version of the MP5K designed for civilian use. It had a modified foregrip redesigned into a traditional handguard that did not allow the fitting of the MP5K's foregrip to make it compliant with the Semi-Auto Weapons Ban of 1989. It was made from 1989 to 1994.
  
• HK54: This was the original model that was produced in the mid 1960s. It later became known as the MP5A1, a very slightly modified version.
  

Heckler und Koch MP-5 (Germany)

In 1963 FN began development of a 5.56x45mm rifle in anticipation of that caliber's adoption by most NATO countries. The rifle was introduced in 1966 as the FN CAL (Carabine Automatique Legere, or Light Automatic Carbine).
It was gas operated in the manner of the FAL. A unique double-interrupted thread on the bolt head locked behind a similar thread on the barrel extension when the bolt was rotated. The recoil spring was wrapped around the short-stroke piston to permit any type of butt configuration. The trigger mechanism, patterned after that of the M1 Garand, provided both full-automatic fire and a three-shot burst control. Upper and lower receivers, as well as the forearm, were sheet-metal pressings and there was a hold-open device. The bolt, carrier and piston were machined from steel bar-stock. Screw-threaded to the upper receiver, the barrel was held in place by a lock nut dropped down from the muzzle and threaded onto a cone on the front of the receiver.
All in all, the FN CAL was a very smart-looking piece. It reeked quality. It had the FN FAL mystique. And it was a dismal failure. During trials conducted in France between 1971 and 1974, the CAL's deficiencies erupted. Expensive to manufacture, difficult to disassemble and properly maintain, the CAL's life expectancy in simulated combat proved all too short. The project was abandoned, and a small quantity of semiautomatic-only samples were sold in the United States. Two years later, the FN designers EVOLVED the FN CAL rifle into the currently produced FN FNC.

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