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-22 not be confused with the weapon commonly sold in America as the Armscor AK22 Sidefolder, which is a sporter, rimfire AK-47 semi-automatic version manufactured in the Philippines as the MAK-22F and sold with a side-folding stock. The two weapons are extremely different both cosmetically and internally. Besides reference to commercial .22 rimfire models of the AK rifle, the terms AK22 and AK-22 are also used to refer to illicit underground manufactured .22 rimfire weapons designed to mimick the appearance of the AK rifle, such as the weapons used in the July 2016 Dhaka attack. AK-22 An AK-22 "Trainer" is a