page_title: AK-47
section_title: Early designs
hierarchical_section_title: AK-47 / History / Early designs
caption_attribution_description: China
context_page_description: The AK-47, officially known as the Avtomat Kalashnikova, 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 family. 47 refers to the year it was finished.
  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, 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.
  Even after seven decades, the model and its variants remain the most popular and widely used rifles in the world because of its reliability under harsh conditions, low production costs compared to contemporary Western weapons, availability in virtually every geographic region, and ease of use.
context_section_description: Kalashnikov started work on a submachine gun design in 1942 and with a light machine gun in 1943. "Early in 1944, Kalashnikov was given some 7.62×39mm M43 cartridges and informed that there were several designers working on weapons for this new Soviet small-arms cartridge. It was suggested to him that this new weapon might well lead to greater things, and he undertook work on the new rifle." In 1944, he entered a design competition with this new 7.62×39mm, semi-automatic, gas-operated, long stroke piston, carbine, strongly influenced by the American M1 Garand. "The rifle that Kalashnikov designed was in the same class as the familiar SKS-45 Simonov with fixed magazine and gas tube above the barrel." However, this new Kalashnikov design lost out to a Simonov design.
  In 1946, a new design competition was initiated to develop a new  rifle. Kalashnikov submitted an entry. It was gas-operated rifle with a short-stroke gas piston above the barrel, a breech-block mechanism similar to his 1944 carbine, and a curved 30-round magazine. Kalashnikov's rifles AK-1 (with a milled receiver) and AK-2 (with a stamped receiver) proved to be reliable weapons and were accepted to a second round of competition along with other designs.
  These prototypes (also known as the AK-46) had a rotary bolt, a two-part receiver with separate trigger unit housing, dual controls (separate safety and fire selector switches) and a non-reciprocating charging handle located on the left side of the weapon. This design had many similarities to the StG 44. In late 1946, as the rifles were being tested, one of Kalashnikov's assistants, Aleksandr Zaitsev, suggested a major redesign to improve reliability. At first, Kalashnikov was reluctant, given that their rifle had already fared better than its competitors. Eventually, however, Zaitsev managed to persuade Kalashnikov.
  In November 1947, the new prototypes (AK-47s) were completed. It used a long-stroke gas piston above the barrel. The upper and lower receivers were combined into a single receiver. The selector and safety were combined into a single control-lever/dust-cover on the right side of the rifle. And, the bolt-handle was simply attached to the bolt-carrier. This simplified the design and production of the rifle. The first army trial series began in early 1948. The new rifle proved to be reliable under a wide range of conditions with convenient handling characteristics. In 1949, it was adopted by the Soviet Army as "7.62 mm Kalashnikov  rifle (AK)".
caption: 1955 AK-47 with a milled Type 3A receiver showing the milled lightening cut on the side above the magazine that for Type 3 receivers is slanted to the barrel axis
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