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 Device 3B (Прибор 3Б), an earlier experimental assault rifle with three barrels.[3] Both weapons were developed by the small arms designer Gennadij 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	Gennadij A. Korobov
Designed	1962–1966
Manufacturer	Tula Arms Plant
Produced	1966 (TKB-059)
Variants	Device-3B TKB-059
Specifications
Mass	3.85kg [1]
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[2]
Feed system	60/45-round detachable box three-row magazine
Sights	Iron sights

Both weapons used a triplet 7.62×39mm magazines with the option of 45 Round Magazines (15x3) or 60 Round Magazines (20x3), with each barrel independently fed from the magazine.[1] 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.[4]