TKB-022PM No. 1 (ТКБ-022ПМ № 1), TKB-022PM No. 2 (ТКБ-022ПМ № 2) and TKB-022PM5 No. 1 (ТКБ-022ПМ5 № 1) were

Soviet The Union of Soviet Socialist Republics. (USSR), commonly known as the Soviet Union, was a List of former transcontinental countries#Since 1700, transcontinental country that spanned much of Eurasia from 1922 until Dissolution of the Soviet ...

bullpup A bullpup firearm is one with its firing grip located in front of the Chamber (firearms), breech of the weapon, instead of behind it. This creates a weapon with a shorter overall length for a given barrel length, and one that is often lighter, ...

assault rifle An assault rifle is a select fire rifle that uses an intermediate cartridge, intermediate-rifle cartridge and a Magazine (firearms), detachable magazine.C. Taylor, ''The Fighting Rifle: A Complete Study of the Rifle in Combat'', F.A. Moyer '' ...

s, capable of fully automatic fire, chambered for the 7.62×39mm round (TKB-022PM No. 1 and TKB-022PM No. 2) and the

5.6×39mm The 5.6×39mm, also known in the U.S. as .220 Russian, is a cartridge developed in 1961 for deer hunting in the USSR. It fires a 5.6mm projectile from necked down 7.62×39mm brass. While it originally re-used 7.62x39 cases, once it became popula ...

round (TKB-022PM5 No. 1), developed by the

small arms 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 ...

designer German A. Korobov in the 1960s. The weapons were gas-operated with an annular gas piston located around the barrel and a vertically moving bolt, which made it possible to minimize the length of the receiver group. A U-shaped rammer/extractor was used to chamber and extract the cartridge by pushing it into the chamber where after discharge was pulled back from the chamber and again, upon feeding the new cartridge, pushed forward and slightly up into an ejection tube running above the barrel, from which it would finally exit above the muzzle. This ejection mechanism made it possible to fire the weapon both right- and left-handed. These weapons had the best barrel length to overall length ratio among the assault rifles. Firing from an unstable position, the TKB-022PM No. 1 and the TKB-022PM No. 2 had three times better accuracy than the AKM. The TKB-022PM5 No. 1 had better accuracy than the AKM when fired from a hand in a lying position at a distance of 100 meters. Although these assault rifles performed well, they were turned down by the Soviet army for being too radical at that time. Additionally, there were concerns about the displaced center of gravity to the tail end of the weapon and the durability of the weapon's plastic housing during prolonged operations under difficult conditions or during storage.

References

* http://weapon.at.ua/load/321-1-0-825 {{Bullpup firearms 5.6×39mm firearms 7.62×39mm assault rifles Assault rifles of the Soviet Union Bullpup rifles Trial and research firearms of the Soviet Union

See also

References