The Red Army experimented with bullpup assault rifles starting in 1943 but they went nowhere (same as the German Knorr-Bremse 8mm para-rifle). Postwar as the Soviets developed the German intermediate round and turned the STG-44 architecture into the well-known and successful AK-47, Korobov tried to compete in '46 with his TKB-408 bullpup which was rejected. He did not, however, give up and later produced a series of TKB-022 bullpups in three designs: 022 No.1, 022 No.2, and 022PM No.5. All were gas operated with short barrels and unique bolts and extraction systems, enabling right and left-hand shooting. Produced from 1962-68 the TKBs failed to replace the AKs once again this time due to several factors: bad ergonomics, bad flash, COG off, and use of plastics not durable for harsh conditions or even storage!!! In modern times the Russians have a new bullpup A-91 assault rifle and .50 heavy urban assault Ash-12 used by SFs. Yet their new rifle to replace the AK is the Nikonov An-94 erroneously called the "Abakan"!

http://images3.wikia.nocookie.net/__cb20080328002816/guns/images/c/c1/TKB-022.jpg A-91: http://world.guns.ru/userfiles/images/1289305384.jpg Ash-12: http://www.gunpundit.com/wp-content/uploads/2011/12/ASh-12.jpg