AK-74 be used by the majority of countries of the former Soviet Union. Additionally, licensed copies were produced in Bulgaria (AK-74, AKS-74 and AKS-74U), and the former East Germany (MPi-AK-74N, MPi-AKS-74N, MPi-AKS-74NK). Besides former Soviet republics and eastern European countries, Mongolia, North Korean Special Forces, and Vietnamese People's Naval infantry use AK-74s. The AK-74 was designed by А. D. Kryakushin's group under the design supervision of Mikhail Kalashnikov and is an adaptation of the 7.62×39mm AKM assault rifle and features several important design improvements. These improvements were primarily the result of converting the rifle to the intermediate-caliber high velocity 5.45×39mm cartridge.
AK-105 AK-105 The AK-105 is a shortened carbine version of the AK-74M rifle, which in turn was derived from the original AK-47 design and its AK-74 successor. The AK-102, AK-104, and AK-105 are very similar in design, the only difference being the caliber and corresponding magazine type. The AK-105 is chambered to fire 5.45×39mm ammunition. The AK-105 is supplementing AKS-74U carbines in Russian Army service since 2001. Compared to the AK-74M, AK-101, and AK-103, which are full-size assault rifles of similar design, the AK-102, 104, and 105 feature shortened barrels that make them a middle ground between a full rifle and