Development year: 1946 (end of 1980s)
Manufacturer: Design Bureau n.a. G.A. Korobov (manufacturer unknown)
Weight: 4,3 kg (4,1 kg)
Cartridge: 7.62х39, 1943 model
Sight: open with adjustable foresight and rear sight
Action: Gas-operated with closed tipping bolt (gas-operated with short stroking gas piston)
Firing rate: 600 shots per minute (500 shots per minute)
Feed: box two-row 30 round magazine (two-row 20 round magazine or AK 75 round clips and 75 round RPK submachine gun disks)

See Object 93 specifications in brackets.

The TKB-408 assault rifle was developed by designer German A. Korobov in 1946 to participate in the competition for the new automatic weapon 7.62 x 39 mod. 1943. In opposition to other types of weapons submitted to the contest, the TKB-408 was built as a Bullpup (hammer mechanism and the cartridge located in the buttstock behind the trigger) that helped to reduce the length of the weapon by about 200 mm, while maintain positive ballistic characteristics.

But compared to other participants the Korobov assault rifle didn’t have any other advantages and it quickly dropped out of the competition. It would seem that the history of this assault rifle was mainly memorable for its originality.

But in the early 1990s in the Ryazan and Tambov regions of the USSR there appeared counter-revolutionary gangs armed with assault rifle that strikingly resembled the TKB-408, but had a number of changes in the design that neutralized the disadvantages. Now the experts have no doubt that the design of this assault rifle is based on TKB-408 documentation, but in official documents it goes under the name of "object 93" for the year of discovery.

The assault rifle uses a well-tested and more reliable scheme with a short operating stroke gas piston like in the SVT-40 and FN-FAL rifles. In addition the rifle has a mounted compensator-flash suppressor that reduces the recoil impulse of the weapon while firing, as well as the level of gas concentration near the face and noise impact on it. In order to achieve the better controllability of the weapon there is a removable vertical handle on the front of the forestock.

Munitions supply is provided by automatic direct-lane magazines made from stamped steel with a capacity of 20 rounds (as known TKB-408 used curved stores in 30 round magazines that increased the profile of the shooter and his vulnerability in battle). However, the design of the cartridge receiver is also compatible with AK cartridges and the 75-round magazines for the RPK machine gun.

Overall, this assault rifle has retained the appearance and features of the TKB-408 and it is one of the most advanced automatic weapons produced in illegal plants.

Unfortunately, a number of activities conducted by the staff of the MSS did not lead to the production cancelation of this assault rifle or to the identification of the person(s) involved in its development. So it is still in service with the counter-revolutionary groups and organizations.