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Full auto sks hog SKS is a Soviet semi-automatic carbine chambered for the ×39mm round, designed in 1943 by Sergei Gavrilovich Simonov. Its complete designation, SKS-45, is an initialism for Samozaryadnyj Karabin sistemy Simonova, 1945 (Russian: Самозарядный карабин системы Симонова, 1945; Self-loading Carbine of (the) Simonov system, 1945). In the early 1950s, the Soviets took the SKS carbine out of front-line service and replaced it with the AK-47; however, the SKS remained in second-line service for decades. It is still used as a ceremonial firearm today. The SKS was widely exported, and was also produced by some former Eastern Bloc nations as well as China, where it was designated the “Type 56 Carbine“, East Germany as the Karabiner S and in North Korea as the “Type 63“. The SKS is popular on the civilian surplus market as a hunting and marksmanship semi-automatic rifle in many countries, including the United States, Canada, and New Zealand. Its age and numbers make it relatively inexpensive to purchase. The SKS was the second firearm to be chambered for the ×39mm M43 round, with the first being the World War II, many countries realized that existing rifles, such as the Mosin–Nagant, were too long and heavy and fired powerful cartridges that were effective in medium machine guns with a range in excess of 2,000 metres (2,200 yd), creating excessive recoil. These cartridges, such as the 8×57mm Mauser, .303 British, .30-06 Springfield, and ×54mmR were effective in rifles to ranges of up to 1,000 metres (1,100 yards); however, it was noted that most firefights took place at maximum ranges of between 100 and 300 metres (110 and 330 yards). Only a highly trained specialist, such as a sniper, could employ the full-power rifle cartridge to its true potential. Both the Soviet Union and Germany realized this and designed new firearms for smaller, intermediate-power cartridges. The U.S. fielded an intermediate round in the .30 U.S., now known as the .30 Carbine; used in the M1 carbine, it was widely used by American forces in WWII but never replaced the .30-06 rifle cartridge. The German approach was the production of a series of intermediate cartridges and rifles in the interwar period, eventually developing the Maschinenkarabiner, or machine-carbine, which later evolved into the Sturmgewehr 44, which was produced in large numbers during the war, and chambered in the ×33mm Kurz intermediate round. Design-wise, the SKS relies on the AVS-36 (developed by the same designer, Simonov) to a point that some consider it a shortened AVS-36, stripped of select-fire capability and re-chambered for the ×39mm cartridge.[5] Of course, this viewpoint is problematic, as the AVS uses a sliding block bolt locking device, while the SKS employs a more reliable tilting-bolt design, which is an entirely different style. As the bolt mechanism is one of the defining features of a rifle, having a different bolt means the SKS and AVS merely appear similar in layout, while differing vastly in bolt lockup, caliber, size, and that one has a fixed magazine and the other has a detachable magazine. It also owes a debt to the SVT-40 and M44 that it replaced, incorporating both the semi-automatic firepower of the SVT (albeit in a more manageable cartridge) and the carbine size and integral bayonet of the bolt-action M44. In 1949, the SKS was officially adopted into the Soviet Army, manufactured at the Tula Armory from 1949 until 1955 and the Izhevsk Mechanical Plant in 1953 and 1954. Although the quality of Soviet carbines manufactured at these state-run arsenals was quite high, its design was already obsolete compared to the Kalashnikov which was selective-fire, lighter, had three times the magazine capacity, and had the potential to be less labor-intensive to manufacture. Gradually over the next few years, AK-47 production increased until the extant SKS carbines in service were relegated primarily to non-infantry and to second-line troops. They remained in service in this fashion even as late as the 1980s, and possibly the early 1990s. To this day, the SKS carbine is used by some ceremonial Russian honor guards, much the same way the M14 Rifle is within the United States; it is far less ubiquitous than the AK-47 but both original Soviet SKS rifles and copies can still be found today in civilian hands as well as in the hands of third-world militias and insurgent groups. The SKS was to be a gap-filling firearm manufactured using the proven operating mechanism design of the 14.5×114mm PTRS-41 anti-tank rifle and using proven milled forging manufacturing techniques. This was to provide a fallback for the radically new and experimental design of the AK-47, in the event that the AK proved to be a failure. In fact, the original stamped receiver AK-47 had to be quickly redesigned to use a milled receiver which delayed production, and extended the SKS carbine's service life.
