|Place of origin||Soviet Union|
|Designer||German Aleksandrovich Korobov|
|Manufacturer||Tula Arms Plant|
|Mass||3.5 kg (7.7 lb) (unloaded)|
3.8 kg (8.4 lb) (loaded with 30-round magazine)
|Rate of fire||600 rounds/min|
|Muzzle velocity||700 m/s (2,300 ft/s)|
|Effective firing range||350-400 m (1,150-1,310 ft)|
|Maximum firing range||1,500 m (4,900 ft)|
|Feed system||30-round detachable box magazine|
|Sights||Adjustable iron sights|
The TKB-517 (Russian: -517) is an assault rifle designed by German Aleksandrovich Korobov. This rifle was externally similar to the AK-47, but based on the lever-delayed blowback mechanism invented by John Pedersen and refined by Pál Király. It turned out to be more reliable, More accurate or controllable under full auto, and easier to produce and maintain. Like the AK series, it was also manufactured with folding stocks, longer, heavier barrels with bipods (forming light support weapons) and even a belt-fed variant. Its rejection was because of a greater proficiency with the AK-47 among the Russian military, though it is just as likely it was rejected due to relatively high extraction pressure, which is a common issue firearms using lever-delayed blowback actions.
The TKB-517 is externally similar to the AK-47 and field-strips similarly, but instead it uses lever-delayed blowback for its operation, slightly reducing recoil and making it more controllable. The receiver is made from pressed steel with laminated wood stock, grip and handguards.