The Interdynamic MP-9 is a blowback-operated,

fully automatic An automatic firearm or fully automatic firearm (to avoid confusion with semi-automatic firearms) is a self-loading firearm that continuously chambers and fires rounds when the trigger mechanism is actuated. The action of an automatic firear ...

9 mm This is a list of firearm cartridges that have bullets in the to caliber In guns, particularly firearms, but not #As a measurement of length, artillery, where a different definition may apply, caliber (or calibre; sometimes abbreviate ...

caliber

firearm A firearm is any type of gun that uses an explosive charge and is designed to be readily carried and operated by an individual. The term is legally defined further in different countries (see legal definitions). The first firearms originate ...

, classified by the

ATF The Bureau of Alcohol, Tobacco, Firearms and Explosives (BATFE), commonly referred to as ATF, is a domestic law enforcement agency within the United States Department of Justice. Its responsibilities include the investigation and prevention ...

as a submachine gun. It is made of inexpensive molded

polymer A polymer () is a chemical substance, substance or material that consists of very large molecules, or macromolecules, that are constituted by many repeat unit, repeating subunits derived from one or more species of monomers. Due to their br ...

and stamped steel parts. 10-, 20-, 32-, 36- and 50-round magazines are available. The MP-9 came from a design that a Swedish company

Interdynamic AB Intratec was a firearm company based in Miami, Florida, US. The company's most famous product was the TEC-9. History Intratec began as Interdynamic USA, an offshoot of Swedish firearms manufacturer Interdynamic AB. As a result of the lack of a ...

Stockholm Stockholm (; ) is the Capital city, capital and List of urban areas in Sweden by population, most populous city of Sweden, as well as the List of urban areas in the Nordic countries, largest urban area in the Nordic countries. Approximately ...

had for a cheap submachine gun for military applications. Interdynamic was unable to drum up any interest among governments, and the subgun never entered production in Sweden. Unwilling to give up on the design, Interdynamic set up a U.S. subsidiary intended principally to market a semiautomatic version, named the KG-9 after the two principal partners,

George Kellgren George Kellgren (born May 23, 1943) is a Swedish-born firearms designer, inventor and founder of the gun manufacturer Kel-Tec. His designs include the Intratec TEC-9, Kel-Tec P-11, Kel-Tec KSG, Kel-Tec SUB-2000 carbine and Grendel Inc., Grendel P ...

and Carlos Garcia, to civilians. More about Kellgren and Garcia can be found under

Intratec Intratec was a firearm company based in Miami, Florida, US. The company's most famous product was the TEC-9. History Intratec began as Interdynamic USA, an offshoot of Swedish firearms manufacturer Interdynamic AB. As a result of the lack of a ...

. Interdynamic USA was forced by the ATF to redesign the KG-9 due to its ease of being converted to full auto. At the same time as a closed bolt being designed, per the BATF, the lower plastic receiver had to be retooled to place a metal serial number tag in the side as opposed to just stamping the serial number in the plastic magazine well. This version was named the KG-99 and it is this gun that was offered in an open bolt submachine gun configuration designated the MP-9. Placed side by side, the KG-99 and MP-9 upper and lower receivers are identical with the exception that the MP-9 has a bolt hold open slot milled in the upper and the tip of the muzzle has a compensation slot cut into it. Interdynamic produced a very small quantity of registered MP-9 submachine guns due to lack of demand by the general public. The MP-9 was made in two configurations, one with select fire capability and a collapsible stock (Interdynamic MP-9), and one that is fully automatic only with no stock (K-9). Production numbers are believed to be less than 50 total, perhaps as few as 24 in select-fire with the collapsible stock. More information on this type of gun can be found under Intratec TEC-DC9.

Imitation made illegally in Europe

Quantities of an illegally-made 9mm

machine pistol A machine pistol is a handgun that is capable of automatic firearm, fully automatic fire, including shoulder stock, stockless handgun-style submachine guns. The Austrians introduced the world's first machine pistol, the Steyr M1912 pistol#Masch ...

have been seized in Europe. They are somewhat similar to the Intratec TEC-9, and are marked "Intratec TEC-9".

References

External links

Interdynamic MP-9 manual
Simple blowback firearms 9mm Parabellum submachine guns Submachine guns of Sweden {{Submachinegun-stub

Imitation made illegally in Europe

See also

References

External links