AK-47 AK-47 The AK-47, AK, or as it is officially known (), also known as the Kalashnikov, is a gas-operated, 7.62×39mm assault rifle, developed in the Soviet Union by Mikhail Kalashnikov. It is the originating firearm of the Kalashnikov rifle (or "AK") family. Design work on the AK-47 began in 1945. In 1946, the AK-47 was presented for official military trials, and in 1948, the fixed-stock version was introduced into active service with selected units of the Soviet Army. An early development of the design was the "AKS" (S—"Skladnoy" or "folding"), which was equipped with an underfolding metal shoulder stock. In
AK-9 It is one of the latest models of the popular Kalashnikov rifle series. It is based on the AK-100 series, which is a modernization series of Kalashnikov assault rifles. A unique feature of the rifle is the use of the special subsonic cartridge 9×39mm SP-5, SP-6. According to its characteristics it competes against the 9A-91, AS Val and SR-3M, but has seen limited use compared to these counterparts, which have already seen service in Russian military and police units. In 2006, Russian authorities wanted the Izhmash factory to design a rifle with Kalashnikov properties, but suitable to be used in