The AK-47, officially known as the Avtomat Kalashnikov (Russian: Автомат Калашникова, literally 'Kalashnikov's automatic [rifle]'; also known as the Kalashnikov or just AK), is a gas-operated assault rifle that is chambered for the 7.62×39mm cartridge. Developed in the Soviet Union by Russian small-arms designer Mikhail Kalashnikov, it is the originating firearm of the Kalashnikov (or "AK") family of rifles. After more than seven decades, the AK-47 model and its variants remain the most popular and widely used rifles in the world.



The number "47" refers to the year the rifle was finished. Design work on the AK-47 began in 1945. It was presented for official military trials in 1947, and, in 1948, the fixed-stock version was introduced into active service for selected units of the Soviet Army. In early 1949, the AK was officially accepted by the Soviet Armed Forces[9] and used by the majority of the member states of the Warsaw Pact.