TKB-059

TKB-059 (ТКБ-059) was a Soviet three-barrel bullpup assault rifle, capable of fully automatic fire, chambered for the 7.62×39mm round and manufactured by Tula Arms Plant in 1966. It was based on the Pribor 3B (Прибор 3Б), an earlier experimental assault rifle with three barrels.[2] Both weapons were developed by the small arms designer G. A. Korobov.

TKB-059
прибор 3Б
Type	Bullpup assault rifle
Place of origin	Soviet Union
Service history
In service	Prototype only
Used by	Soviet Union prototype only
Wars	none
Production history
Designer	German A. Korobov
Designed	1962–1966
Manufacturer	Tula Arms Plant
Produced	1966 (TKB-059)
Variants	Pribor-3B TKB-059
Specifications
Mass	4.5kg
Length	690 mm
Barrel length	430 mm
Cartridge	7.62×39mm
Caliber	7.62mm
Barrels	3
Action	Gas-operated
Rate of fire	1400–1800 rounds/min[1]
Feed system	45-round detachable box three-row magazine
Sights	Iron sights

Both weapons used a tripled 7.62×39mm magazine with a capacity of 45 rounds, with each barrel independently fed from the magazine. The TKB-059 can be fired ambidextrously as the cartridge ejection is downwards behind the magazine area.

TKB-059 can now be seen at the Tula arms museum.[3]