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AK-47
Ak47 3
The experimental Kalashnikov assault rifle of 1947, also known as AK-47, second model

Type

Assault rifle

Place of origin

Soviet Union

In service

1949-present

Designer

Mikhail Kalashnikov

Designed

1944-1946

Manufacturer

Izhmash

Cartridge

7.62x39mm M43

Feed system

20 or 30-round detachable box magazine

The AK-47 is a selective fire, gas operated 7.62mm assault rifle, first developed in the Soviet Union by Mikhail Kalashnikov. The designation AK-47 stands for Kalashnikov automatic rifle, model of 1947 (Russian: Автомат Калашникова 47, tr. Avtomat Kalashnikova 47). It is therefore also known as Avtomat Kalashnikova (or simply 'AK'), Kalashnikov or Russian jargon Kalash). D
Ak46 2

AK-46 varient disassembled

esign work on the AK began in 1944. In 1946 a version of the rifle, the AK-46, was presented for official military trials, and a year later the fixed stock version was introduced into service with select units of the Red Army. An early development of the design was the AKS-47 (S—Skladnoy or "folding"), which differed in being equipped with an underfolding metal shoulder stock. The AK-47 was officially accepted by the Soviet Armed Forces in 1949 and used by the majority of the member states of the former Warsaw Pact. The AK-47 fires the 7.62x39mm cartridge which produces significant wounding (including remote wounding effects known as hydrostatic shock) in cases where the bullet tumbles and fragments in tissue, but which produces relatively minor wounds in cases where the bullet exits before beginning to yaw.
Rifle AK-47

An AK-47 with ammo cartridges.

The original AK-47 was one of the first true assault rifles. Even after six decades, due to its durability, low production cost and ease of use, the model and its variants remain the most widely used and popular assault rifles in the world. It has been manufactured in many countries and has seen service with regular armed forces as well as irregular, revolutionary and terrorist organizations worldwide. The AK-47 was also used as a basis for the development of many other types of individual and crew-served firearms. More AK-type rifles have been produced than all other assault rifles combined.

HistoryEdit

The true story of AK began late in 1942, when Soviet troops captured several specimen of the very new German MKb.42(H) machine carbine (assault rifle), along with some 7.92 Kurz ammunition. By mid-1943 the MKb.42(H) along with the US-supplied M1 carbine were evaluated by Soviet experts, and it was decided on top level that similar weapons, firing the intermediate power cartridge, must be developed for the Soviet army as soon as possible. The task of initial development of new ammunition was
As44

The first Soviet 'true' intermediate cartridge (7.62x41 M43) assault rifle, Sudaev AS-44, as tested in 1944. Unfortunately, Sudaev fell severely ill in 1945 and died next year before finalizing his design.

accomplished in a rather short time. By November 1943 technical specifications for the 7.62x41mm cartridge, having bottlenecked, rimless case and firing 8-gram pointed bullet, were sent out to all Soviet small arms design bureaus and organizations. By the spring of 1944, there were at least ten designs of automatic weapons in the works (not counting semi-automatic carbines that resulted in adoption of SKS and bolt-action carbines that went nowhere). In mid-1944, trials commission selected the AS-44 assault rifle, designed by Sudaev, as the overall best, and ordered a limited production run for troops trials. Some AS-44 rifles were manufactured in spring of 1945, and these were evaluated by troops in summer of 1945, just after the Victory in Europe. Troops generally liked the AS-44, as it has longer effective range compared to PPSh-41 submachine gun, and provided better accuracy in semi-automatic fire. The problem was that AS-44 was overly heavy (more than 5 kg empty), and trials commission ordered next round of development and trials, which started early in 1946. Enter Mikhail Kalashnikov, the young sergeant of Soviet tank forces, who, after being wounded in combat in 1942, designed a prototype submachine gun while on medical leave. His first weapon was rejected on the grounds of complexity, but the designer himself was assigned to the Red Army's Small Arms and Mortar Research & Proving ground (NIPSMVO) near Moscow to continue his education and work on other weapons. Here Kalashnikov designed a semi-automatic carbine, heavily influenced by the American M1 Garand rifle. This carbine, while not suc
Ak46 1

The first Kalashnikov assault rifle prototype of 1946, also known as AK-46. Note that it had numerous internal and external differences from the later models, including separate safety and fire mode selector switches, as well as non-reciprocating charging handle, all located on the left side of the weapon

cessful by itself, served as a starting point for the first Kalashnikov's assault rifle, provisionally known as AK No.1 or AK-46. In November of 1946 the AK-46 project was chosen for prototype manufacture along with 5 other projects (out of 16 submitted to commission), and Kalashnikov was sent to the city of Kovrov (also not far from Moscow), to manufacture his weapon at the small arms factory there. The AK-46 was a gas operated, rotary bolt weapon that utilized short-stroke gas piston above the barrel, and a two-part receiver with a separate trigger unit housing and dual controls (separate safety and fire selector switches on the left side of the trigger unit).
In December 1946 new assault rifles were tested at NIPSMVO range, with the AS-44 being used as a control (its development has ceased earlier in 1946 due to untimely death of the Sudaev, who was severely ill by the 1945). As an initial result of these tests, the AK-46 was selected for further development by trials commission, with two more weapons selected for further evolution being rifles from designers Dementiev and Bulkin. The second round of trials, which included three weapons (AK-46 by Kalashnikov, AB-46 by Bulkin and AD by Dementiev), resulted in rejection of the improved AK-46, which was inferior to other rivals in many aspects. Despite that failure, Kalashnikov, using his contacts and support from some member of trials commission (whom he knew from his earlier work at NIPSMVO in 1943-46) pursued the head of the trials commission to review the results, and finally got a green light to continue his development for next round of trials. Following the technical failure of the AK-46, Kalashnikov and his companion designer Zaitsev (who was a staff weapons designer at Kovrov plant) decided to completely rework the design, using successful technical solutions borrowed from various weapons, including direct competitors. For example, the long-stroke gas piston, attached to the bolt carrier, along with captive return spring assembly and receiver cover were apparently inspired by Bulkin's AB-46 rifle; the idea of large clearances between bolt group and receiver walls, with minimum friction surfaces, was inspired by the Sudaev's AS-44, the safety / dust cover lever was copied from Browning designed Remington model 8 hunting rifle etc.
Such copying and borrowing of ideas was actually encouraged by the trials commission (and the whole Soviet ideology), as all intellectual property in USSR was considered to be property of 'the people', or the state. Thus, any state-owned intellectual property could (and must) have been used to the benefit of the people / the state by anyone. And creating a new, most effective assault rifle for the victorious Soviet army was certainly on the top of the list of things, beneficial for the Soviet state at the time.

After extensive tests, conducted in December 1947 - January 1948, which included the slightly improved Dementiev KB-P-410, Bulkin TKB-415 and all-new Kalashnikov AK-47 rifles, results were somewhat inconclusive. The AK-47 was found to be most durable and reliable out of three contestants, but it also dragged behind the other two in the accuracy department, especially in full automatic (which was, and still is considered the primary mode of fire for assault rifle in Russia). In fact, the only weapon that fulfilled accuracy requirements was the Bulkin AB-47 / TKB-415, but it had certain problems with parts durability. After lengthy discussion, trials commission finally decided that the better is the enemy of the good, and it is advisable to have not-so accurate but reliable weapon now, rather than to wait indefinitely for accurate-and -reliable weapon in the future. This decision ultimately lead commission to recommend AK-47 for troops trials in November, 1947. It was decided that the production of the new weapon must be commenced at Izhevsk arms plant (now Izhevsk Machine building Plant or IzhMash in short). Kalashnikov has moved from Kovrov to Izhevsk to help with production of the new weapon, which commenced in mid-1948. Official adoption followed late in 1949, with standard nomenclature being '7.62mm avtomat Kalashnikova AK' (7.62mm automatic carbine Kalashnikov). At the same time, a folding buttstock version was adopted for airborne units use, as '7.62mm avtomat Kalashnikova skladnoy AKS' (7.62mm automatic carbine Kalashnikov, folding).
It must be noted that the original design of the receiver, which was assembled from stamped steel 'box' with large machined steel insert pinned at the front, caused a lot of troubles at factory. The technology (equipment and labor) level of the time resulted in extremely high percentage of rejected receivers due to misformed walls, improper pinning of parts, bad geometry etc. After critical revision of the process at the factory it was calculated that it will be more economically feasible to return to the 'old-school' machined receivers. New, machined receiver was designed by one of factory's staff designers, and after approval by military, it was put into production at IzhMash in 1951, under the same basic designation.

Through the following years, the design of AK incorporated many minor changes and updates, but it was the experimental Korobov TKB-517 assault rifle (tested by Soviet army in mid-fifties) that spurred further development of AK. The Korobov TKB-517 assault rifle was a great deal lighter than AK, about 1/3 cheaper to manufacture, and significantly more accurate in full automatic fire. This lead the Soviet army to issue new requirements for a lighter and more effective assault rifle, which were formulated in 1955. These requirements were also complemented by requirement for a companion squad automatic / light support weapon (light machine gun in Russian nomenclature). Trials for new weapons were held in 1957-58. Kalashnikov team from Izhevsk submitted an improved AK with new type of stamped receiver and other minor improvements, which competed against a number of weapons from other design teams from the Kovrov and Tula. In technical terms, the Kalashnikov entry fared about average in these trials, with certain rival weapons proving to be more combat-effective and less expensive to make. The trials commission, however, decided again that the better is the enemy of the good, and recommended the improved AK for adoption due to its proven performance and familiarity to the industry and troops. It was officially adopted in 1959 as the AKM ( Avtomat Kalashnikova Modernizirovannyj - Kalashnikov Automatic rifle, Modified) along with companion RPK squad automatic weapon / light machine gun.

The key changes in AKM, as compared to AK, were the introduction of the stamped steel receiver instead of the milled one, and an improved trigger/hammer unit, with an added hammer release delay device (often incorrectly referred as a rate reducer). Other changes were the redesigned, slightly raised buttstock and the pistol grip, and the addition of the removable muzzle flip compensator. This spoon-like compensator is screwed onto the muzzle and utilized the muzzle blast to reduce muzzle climb during automatic fire. The compensator could be replaced by the screw-on "PBS-1 noiseless firing device", generally known as a silencer. This silencer requires a special, sub-sonic ammunition with heavier bullets to be used. Another change from AK to AKM was a slightly improved rear sight, with settings from 100 to 1000 (instead of the 800 on AK) meters. Both 800 and 1000 meters, however, are way too optimistic for any practical use, since the effective fire is limited roughly to 300-400 meters, if not less.

In the 1974, Soviet Army officially adopted the 5.45mm ammunition and the appropriately chambered AK-74 assault rifle as its new standard shoulder arm. The AKM, however, was never officially declared obsolete and removed from service, and is still in Russian army stocks. Some non-infantry units of the Russian Army are still armed with 1960s vintage AKM assault rifles. There's also an increasing interest in the 7.62mm weapons since many troops were disappointed by the effectiveness of the 5.45mm ammo during the local conflicts in the 1990s. Some Russian special forces troops (mostly police and Internal Affairs Ministry), currently operating in Chechnya, are using the venerable 7.62mm AKM rifles.

The AK and AKM rifles were widely exported to the pro-Soviet countries and regimes all around the world. Manufacturing licenses along with all necessary technical data packages were transferred (for free or at nominal fee) to many Warsaw Pact countries (Albania, Bulgaria, China, East Germany, Hungary, North Korea, Poland, Romania, Yugoslavia). Certain 'non-communist', but friendly countries, such as Egypt, Finland and Iraq, also received manufacturing licenses.

At the present time, despite the world-wide proliferation of the small-bore (5.56 / 5.45mm) weapons, many companies still manufacture 7.62mm assault rifles for military or police use (for example, there's an AK-103, made in limited numbers by the IZHMASH in Russia). Also, production of the semi-automatic only civilian AK derivatives is continued in many countries, including Russia, Bulgaria, Romania, China and others.

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