RPK, sometimes retroactively termed the RPK-47, is a Soviet 7.
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The RPK continues to be used by the armed forces of countries of the former Soviet Union and certain African and Asian nations.
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RPK-74 was introduced in 1974 together with the AK-74 assault rifle and chambered for the new 5.
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RPK-74 uses a longer and heavier chrome-plated barrel, which has a new gas block with a gas channel at a 90° angle to the bore axis, and a ring for the cleaning rod.
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Additionally, the RPK-74 has a modified return mechanism compared to the AK-74, which uses a new type of metal spring guide rod and recoil spring.
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RPK-74 feeds from a 45-round steel or polymer box magazine, interchangeable with magazines from the AK-74, and is designed to be charged from stripper clips.
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Drum magazines similar to those used on the previous RPK models were tested during its development phase, but were discontinued in favor of the 45-round box magazine.
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RPK-74M is an updated variant of the RPK-74 developed during the mid-'70s.
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Each RPK-74M is fitted standard with a side-rail bracket for mounting optics.
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Series of semi-automatic rifles and shotguns based on the heavy RPK receiver are manufactured by the Molot factory in Vyatskiye Polyany, Russia.
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