Firearm a battle rifle such as the Karabiner 98k, but the chief differences defining an assault rifle are select-fire capability and the use of a rifle round of lesser power, known as an intermediate cartridge. Soviet engineer Mikhail Kalashnikov quickly adapted the German concept, using a less-powerful 7.62×39mm cartridge derived from the standard 7.62×54mmR Russian battle rifle round, to produce the AK-47, which has become the world's most widely used assault rifle. Soon after World War II, the Automatic Kalashnikov AK-47 assault rifle began to be fielded by the Soviet Union and its allies in the Eastern Bloc, as well as
AK-105 by the Izhmash factories in Izhevsk, Russia. and other law enforcement. It is also in limited service with the Russian Army. 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