TKB-059

TKB-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, an earlier experimental assault rifle that also had three barrels. Both weapons were developed by the small arms designer Gennadiy Aleksandrovich Korobov.
Both the TKB-059 and the Device 3B used a specialized 7.62×39mm magazine with three columns, akin to three individual box magazines placed and attached side by side. There were two sizes of magazine: one with a total capacity of 45 rounds, and one with a capacity of 60 rounds. Each barrel was independently fed from its corresponding column. The TKB-059 could be fired ambidextrously as the spent cartridge casings ejected downwards behind the magazines.
The TKB-059 prototype can now be seen at the Tula arms museum.