TKB-059 (ТКБ-059) was a Soviet three-barrel bullpup assault rifle, capable of fully automatic fire, chambered for the 7.62 x 39 mm round and manufactured by the Tula State Arsenal in 1966. It was based on the Pribor 3B (Прибор 3Б), a earlier experimental assault rifle with three barrels. Both weapons were developed by the small arms designer G. A. Korobov. TKB-059 can now be seen at the Tula arms museum.