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-9 AK-9 The AK-9 is a Russian 9×39mm compact assault rifle. Its development began when Izhevsk Machine-Building Plant (IZHMASH), now known as Kalashnikov Concern started working on a new silent, flame-less, compact AK rifle in the early 2000s. When creating the new weapon, the manufacturers have tried to surpass all available competitors, such as the AS Val and SR-3M. The basis for the silent, flame-less shooting complex rifle was designated as the AK-9, where it uses a quick-detachable suppressor. It uses the 9×39mm subsonic cartridge. The AK-9 is primarily designed for special units of the Interior Ministry and the Russian Army.