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-101 AK-74M is still the main assault rifle of the Russian Federation, with the AK-105 being introduced alongside, both chambered for 5.45×39mm. The AKM firing 7.62 mm Soviet rounds is in limited service with selected units in the Russian army, and the AK-103 is in service with some Russian civil police agencies and spec ops units. The advanced AN-94 is entering limited service in the elite forces of the Russian military, some Russian police forces, and the Ministry of Internal Affairs. The AK-101 is a selective fire weapon that can be fired in either semi-automatic or fully automatic mode. The disassembly