The AK-47, or AK as it is officially known (Russian: Автомат Калашникова, translit. Avtomat Kalashnikova, 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. 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...