<Tr> <Th> Feed system </Th> <Td> 30 - round detachable box magazine There are also 5 - 10 -, 20 - and 40 - round box and 75 - and 100 - round drum magazines available </Td> </Tr> <Tr> <Th> Sights </Th> <Td> 100--800 m adjustable iron sights Sight radius: 378 mm (14.9 in) </Td> </Tr> <P> The AK - 47, AK, or as it is officially known (Russian: Автома́т Кала́шникова, tr . Avtomát Kaláshnikova, lit . Kalashnikov's Automatic Rifle), 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 . </P> <P> 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 early 1949, the AK - 47 was officially accepted by the Soviet Armed Forces and used by the majority of the member states of the Warsaw Pact . </P>

What is the full meaning of ak 47