AK-47 AK-47 is known as "Cuerno de Chivo" (literally "Goat's Horn") because of its curved magazine design. It is one of the weapons of choice of Mexican drug cartels. It is sometimes mentioned in Mexican folk music lyrics. 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,
AK-74 launchers. Throughout its development and evaluation stage the multiple modifications were applied to meet Russian military standards, as well as to improve upon the "range of defects" that were discovered on prototype models and to addresses concerns regarding the cost of earlier prototypes. In September 2016 the prototype models were replaced by the final production models of the AK-12 (chambered in 5.45×39mm]) and AK-15 (chambered in 7.62×39mm) assault rifles. Parallel developments are the RPK-16 light machine gun and the MA compact assault rifle (both chambered in 5.45×39mm). The AK-12, AK-15, RPK-16 and MA production models technically stronger resemble the AK-74M,