RPK

For other uses, see RPK (disambiguation).

RPK
RPK with a bipod and drum magazine
Type	Light machine gun
Place of origin	Soviet Union
Service history
In service	1961–present
Used by	See Users
Wars	Palestinian-Israeli Conflict Vietnam War South African Border War Somali Civil War Yom Kippur War[1] Lebanese Civil War Angolan Civil War Afghan Wars Salvadoran Civil War Iran–Iraq War Lord's Resistance Army insurgency Tuareg rebellion (1990–1995)[2] Gulf War Yugoslav Wars Burundian Civil War[3] Iraq War Militias-Comando Vermelho conflict[4] First Libyan Civil War Syrian Civil War War in Iraq (2013–2017) Second Libyan Civil War War in Donbas Ethiopian civil conflict (2018-present) Russo-Ukrainian War
Production history
Designer	Mikhail Kalashnikov
Designed	1959-61
Manufacturer	Vyatskiye Polyany Machine-Building Plant
Produced	1961–1978
Variants	See Variants
Specifications
Mass	4.8 kg (10.6 lb)
Length	1,040 mm (40.9 in) (stock extended)
Barrel length	590 mm (23.2 in)
Cartridge	7.62×39mm M43
Action	Gas-operated, rotating bolt; closed bolt
Rate of fire	600 rounds/min
Muzzle velocity	745 m/s (2,444 ft/s)
Effective firing range	100–1,000 m sight adjustments, Windage adjustable at the rear sight
Feed system	30-, 40-round box magazine, 75-round drum magazine
Sights	Iron sights: semi-shrouded front post and rear sliding tangent with an adjustable notch

The RPK (Russian: Ручной пулемёт Калашникова/РПК, romanized: Ruchnoy Pulemyot Kalashnikova, English: "Kalashnikov's hand-held machine gun"), sometimes inaccurately termed the RPK-47, is a Soviet 7.62×39mm light machine gun that was developed by Mikhail Kalashnikov in the early 1960s, in parallel with the AKM assault rifle. It was created to standardize the small arms inventory of the Soviet Army, where it replaced the 7.62×39mm RPD machine gun. The RPK continues to be used by the military of the post-Soviet states and certain African and Asian nations. The RPK is also manufactured in Bulgaria, Hungary, Romania, and Serbia.

Design details

Operating mechanism

The RPK functions identically to the AK-47. It also uses the same 7.62×39mm ammunition. It has a similar design layout to the Kalashnikov series of rifles, with modifications to increase the RPK's effective range and accuracy, enhance its sustained fire capability, and strengthen the receiver.^[5]

Features

The RPK features a thicker and longer barrel than the AKM. This allows for it to be fired for longer without permanent loss in accuracy due to the barrel heating up. The chrome-lined barrel is permanently fixed to the receiver and cannot be replaced in the field. It is fitted with a new front sight base, and the gas block lacks both a bayonet lug and an under-barrel cleaning rod guide. The barrel also features a folding bipod mounted near the muzzle, and a front sight base with a lug that limits the bipod's rotation around the axis of the barrel. The barrel has a threaded muzzle, enabling the use of muzzle devices such as flash hiders, compensators, and blank-firing adapters. When a muzzle device is not being used, the threads on the muzzle can be covered by a thread protector. The barrel is pinned to the receiver in a modified trunnion, reinforced by ribbing, and is slightly wider than the trunnion used on the standard AKM type rifles. Symmetrical bulges on both sides of the front trunnion ensure a proper fit inside the receiver.

The U-shaped receiver is stamped from a smooth 1.5 mm (0.06 in) sheet of steel compared to the 1.0 mm (0.04 in) sheet metal receiver used on the standard AKM rifles. It uses a modified AKM recoil spring assembly that consists of a rear spring guide rod from the AK and a new forward flat guide rod and coil spring. It features a thick laminated wood foregrip and a fixed laminated wood "club-foot" buttstock similar to the stock used on the RPD, which is designed to allow the user to fire from the prone position more comfortably.^[6] It uses a standard AKM pistol grip and can also use standard AKM detachable box magazines, but it is most commonly used with a 40-round box magazine or a 75-round drum magazine. Interchangeability of parts between the RPK and AKM are moderate.

Sights

The weapon's rear sight leaf is elevation adjustable, and graduated for ranges of 100 to 1,000 meters in 100 m increments. The rear sight leaf also features a windage adjustment knob unique to the RPK series of rifles.

Accessories

Supplied with the RPK are: spare magazines, a cleaning rod, cleaning kit (stored in a hollowed compartment in the buttstock), a sling, oil bottle, and magazine pouches (a single-pocket pouch for a drum magazine or a 4-pocket pouch for box magazines).

Variants

RPK

The RPK light machine gun chambered in 7.62×39mm cartridge, is essentially a Russian equivalent to a squad automatic weapon. It was adopted by the former Soviet Union, and was issued mainly to motorized units. It was later adopted by several military agencies around the world.^[7]

RPKS

The RPKS ("S" — Skladnoy (Russian: складной) means "folding" [stock]) is a variant of the RPK with a side-folding wooden stock was intended primarily for the paratroopers. Changes to the design of the RPKS are limited only to the shoulder stock mounting, at the rear of the receiver. It uses a trunnion riveted to both receiver walls that has a socket and tang, allowing the stock to hinge on a pivot pin. The trunnion has a cut-out on the right side which is designed to engage the stock catch and lock it in place when folded. The wooden stock is mounted in a pivoting hull, which contains a catch that secures the buttstock in the extended position. The rear sling loop was moved from the left side of the stock body to the right side of the stock frame.

RPK-74

RPK-74
RPK-74 with a bipod
Type	Light machine gun
Place of origin	Soviet Union
Service history
In service	1974–present
Used by	See Users
Wars	Soviet–Afghan War First Chechen War Second Chechen War Russo-Georgian War Russo-Ukrainian War 2020 Nagorno-Karabakh conflict
Production history
Designed	1974
Produced	1974–present
Specifications
Mass	4.7 kg (10 lb) (RPK-74) 4.85 kg (10.7 lb) (RPKS-74)
Length	1,060 mm (41.7 in) (stock extended) (RPK-74, RPKS-74) 845 mm (33.3 in) (stock folded (RPKS-74)
Barrel length	590 mm (23.2 in)
Cartridge	5.45×39mm M74
Action	Gas operated, rotating bolt; closed bolt
Rate of fire	600 rounds/min
Muzzle velocity	960 m/s (3,149.6 ft/s)
Effective firing range	800 m (875 yd) (point target) 1,000 m (1,094 yd) (area target)[8]
Maximum firing range	3,150 m (3,440 yd)
Feed system	30-, 45-round box magazine
Sights	Iron sights: semi-shrouded front post and rear sliding tangent with an adjustable notch Sight radius: 555 mm (21.9 in)

A comparison view of the AK-74 (top) and RPK-74 (bottom)

The RPK-74 (РПК-74) was introduced in 1974 together with the AK-74 assault rifle and chambered for the new 5.45×39mm intermediate cartridge.^[9] It was derived from the AK-74 rifle, with modifications that mirror those made to the AKM to create the RPK.

The RPK-74 also 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. It is also equipped with a folding bipod and a different front sight tower. The muzzle is threaded for a flash suppressor or blank-firing device.

The rear stock trunnion was strengthened and the magazine well was reinforced with steel inserts.

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. The rear sight assembly, forward handguard and receiver dust cover were all retained from the RPK.

The RPK-74 feeds from a 45-round steel or polymer box magazine, interchangeable with magazines from the AK-74,^[9] and is designed to be charged from stripper clips. 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. However, recently the production of a 97-round drum has started. This drum was designed to be used with the AK-107 but can also be used in any 5.45×39mm weapon with compatible magazines, such as the RPK-74 and RPK-74M. They were also testing with experimental conventional drums, a prototype 100-round belt fed drum magazine was also created. It attaches into the regular magazine well, but the cartridges are stored on a 100-round belt inside a box. A feed system removes them from the belt and puts them in a position where they can be loaded through the regular magazine well. This system is actuated by a lever from the magazine that clips around the charging handle. It is unknown if this ever went into service.

Standard equipment includes: eight magazines, six stripper clips (15 rounds per clip), a speedloader guide, cleaning rod, cleaning kit, sling, oil bottle and two magazine pouches.^[9] Some variants do not come with the cleaning kit option.

It is in widespread use by member states of the former Soviet Union, as well as Bulgaria.^[9]

RPKS-74

The RPKS-74 is the paratrooper variant of the RPK-74, equipped with a wooden folding stock from the RPKS.

RPK-74M

RPK-74M with its bipod deployed

The RPK-74M (Modernizirovannij "Modernized") is an updated variant of the RPK-74 developed during the mid-'90s. In line with the AK-74M assault rifle variant, the RPK-74M lower handguard, gas tube cover, pistol grip, and new synthetic stock are made from a black, glass-filled polyamide. The stock is shaped like the RPK-74 fixed stock, but also side-folds like the RPKS-74. The stock additionally has an easier to use release mechanism, replacing the bullet press release from the RPKS and RPKS-74. Each RPK-74M is fitted standard with a side-rail bracket for mounting optics. It also includes most of the 74M economic changes, such as the dimpled on barrel hardware, omission of lightening cuts from the front sight block and piston and stamped gas tube release lever. Updated magazines were produced by Molot with horizontal ribs going up the sides of the magazines.

RPK-201 and RPK-203

An export variant chambered in 5.56×45mm NATO was also introduced, designated as the RPK-201. A modernised export variant of the RPK was also developed, designated as the RPK-203. They both uses the same polymer construction as the RPK-74M.

RPKN and RPK-74N

The RPK family of light machine guns are also available in a night fighting configuration. These variants are designated as the RPKN, RPKSN, RPK-74N, and RPKS-74N. They have a side rail mounting on the left side of the receiver that accepts a NSP-3, NSPU, or NSPUM night vision sight.^[10] Models designated RPKN-1, RPKSN-1, RPK-74N and RPKS-74N can mount the multi-model night vision scope NSPU-3 (1PN51)^[11] while RPKN2, RPKSN2, RPK-74N2 and RPKS-74N2 can mount the multi-model night vision scope NSPUM (1PN58).^[12]

RPK-16

RPK-16 with a 95-round drum magazine and sound suppressor

The RPK-16 light machine gun (the number 16 indicates the year 2016, when the development first started) is Kalashnikov's response to the "Tokar-2" program, where it competed against Degtyaryov's submission. In 2018, the Ministry of Defence of the Russian Federation have signed a contract concerning the procurement of the RPK-16, and is expected to take over the role of the RPK-74 in the Russian Armed Forces.^[13]

The RPK-16 is chambered in 5.45×39mm which features the traditional Kalashnikov gas-operated long-stroke piston system, and shares several novel technical and ergonomic features derived from the AK-12 program. Such as a Picatinny rail on the top of the receiver for mounting various optical sights and on the bottom of the handguard to mount the Picatinny rail mounted detachable bipod instead of the fixed bipod of the RPK-74, an ergonomic pistol grip and a folding buttstock, and two main barrel lengths; a 550 mm (21.7 in) long barrel (when it is applied or configured for the light machine gun role) and a 370 mm (14.6 in) short barrel (when it is applied or configured for the assault rifle role).^[14] Its design enables it to have an interchangeable barrels that can easily be removed, and the ability to quickly attach a detachable suppressor. It has a combat weight of 6 kg (13.23 lb), a full-length of 1,076 mm (42.4 in), a cyclic rate of fire of 700 rounds per minute, an accuracy range of 800 m (870 yd). It primarily uses a 95-round drum magazine and is backwards compatible with box magazines from the AK-74, AK-12 and RPK-74.^[15]

After receiving feedback on the performance of the weapon, the Kalashnikov Concern has begun development on the RPL-20 (20 indicating 2020) belt-fed light machine gun also chambered in 5.45×39mm and with a very similar rate of fire. Kalashnikov Concern has so far created at least one functional prototype.^[16][17] If adopted, the gun will become the first light machine gun to be used by Russian forces since the RPD that isn't magazine-fed or of the standard Kalashnikov pattern.

Molot Vepr

Main article: Vepr-12

Not to be confused with the Ukrainian Vepr assault rifle.

Molot Vepr-12 at the ARMS & Hunting 2012 exhibition in Moscow

A series of semi-automatic rifles and shotguns based on the heavy RPK receiver are manufactured by the Molot factory in Vyatskiye Polyany, Russia. These rifles are known as the Vepr (Vepr > "Wild Boar"). They are offered in several chamberings, including: .223 Remington, 7.62×39mm, 5.45×39mm, 6.5mm Grendel, 7.62×54mmR, .308 Winchester, .30-06 Springfield and Vepr shotguns in 12 gauge, 20 gauge, and .410 bore. The hallmark of Vepr rifles is their heavy RPK receiver and barrel. The barrel, gas block, and bore are chrome lined throughout. They are intended for the civilian market, and are marketed as high quality hunting rifles. Due to this designation, they lack features seen on most AK type rifles. Vepr rifles do not include a bayonet lug, integrated cleaning rods or tool kits, can not accept standard AK magazines, and have wooden thumb-hole stocks. Some buy these rifles to "convert" into a traditional style AK rifle, installing new pistol-grip stocks and adding tactical accessories.

Early generations of the Vepr rifle were manufactured with slant-back receivers, making them incompatible with most AK furniture sets without a converter. The receivers were changed to straight-back in the second generation. Subsequent versions of the rifle reverted to slant-back. Due to this rapid change between designs, it is not uncommon to find some second generation Vepr rifles with rough, incomplete stocks that have not been sanded or painted.

Users

A map with RPK users in blue

Iraqi soldiers training with the Romanian Model-1964 (RPK).

Soldier of National Guard of Ukraine with the RPK.

Ukrainian JMTG-U soldier firing the RPK.

•  Albania:^[18] Uses both Soviet and locally produced ASh-78 Tip-2 rifles.^[19]
•  Armenia:^[20] RPK-47
•  Azerbaijan
•  Bulgaria: Produced by Arsenal as the LMG in three different calibers, 7.62×39mm, 5.45×39mm and 5.56×45mm NATO. Uniquely had milled receivers. A folding stock variant is known as the LMG-F.^{[18][21][22][23]}
•  Burundi^[24]
•  Cambodia^[25]
•  Cape Verde^[18]
•  Central African Republic^[18]
•  Chad^[18]
•  Comoros^[18]
•  Congo-Brazzaville^[18]
•  Cuba^[18]
•  Djibouti^[18]
•  Equatorial Guinea^[18]
•  Ethiopia^[18]
•  Fiji:^[26] RPK-201 variant.
•  Georgia:^[18] RPK-74 variant is still in use by the Georgian Army and special forces.^[27]
•  Guinea-Bissau^[18]
•  Hungary^[18]
•  Iran:^[18] Locally known as "BB-Kalash".
•  Iraq^[18] Also manufactured locally as Al Quds^[28]
•  Kazakhstan: RPK-74^[29]
•  Latvia: Used by Latvian National Guard.^[30]
•  Lesotho^[31]
•  Libya^[18]
•  Malaysia: RPK-74 variant is used by the Grup Gerak Khas (GGK) of the Malaysian Army.^[32]
•  Mali:^[18] Armed and Security Forces of Mali.
•  Malta^[18]
•  Mozambique^[18]
•  Namibia^[33]
•  Nicaragua^[18]
•  Nigeria^[18]
•  North Korea: Type 64.^[18]
•  Poland^[18]
•  Romania: Built by Fabrica de Arme Cugir SA as the Puşcă Mitralieră model 1964 ("model 1964 light machine gun")^[34] and later, a 5.45mm version based on the PA md. 86—the Mitralieră md. 1993 ("model 1993 light machine gun").^[35]
•  Russia: RPK,^[36] RPK-74, RPK-74M and RPK-16^[13]
•  Seychelles^[18]
•  Serbia: Manufactured locally as the Zastava M72.
•  Somalia^[18]
•  Sudan^[18]
•  Syria^[18]
•  Tajikistan
•  Tanzania^[18]
• Transnistria^[37]
•  Uganda^[18]
  • Lord's Resistance Army^[38]
•  Ukraine: RPK-74 and RPK, also used by separatists.^[39]
•  United States: Used during the Iraq War.^[40]

  

  A Triple Canopy contractor gives a marksmanship class on the Zastava M-72 machine gun to two US Army soldiers.

•  Uzbekistan^[18]
•  Vietnam^[41]
•  Yemen^[18]
•  Zimbabwe^[18]

Former users

•  Afghanistan^[18]

•  Artsakh: RPK-203^[42]
•  East Germany: Manufactured locally as the LMGK (Leichtes Maschinengewehr Kalashnikov).^[43][44]
•  Rhodesia^[45][46]
•  Soviet Union^{[citation needed]}
•  Yugoslavia: Manufactured locally as the Zastava M72.^{[citation needed]}

See also

• PK machine gun
• PKP Pecheneg machine gun
• M249 light machine gun
• IWI Negev
• QJY-88
• FN Minimi
• ČZW-762
• Nikonov machine gun
• IP-2
• Valmet M78
• Zastava M72
• RPL-20

References

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36. «На занятиях по боевой подготовке военнослужащие отрабатывают стрельбу из автоматов Калашникова АК-12, АК-74, 7,62-мм ручных пулемётов Калашникова РПК, снайперских винтовок СВД»
    Военнослужащие контрактной службы группировки войск «Центр» готовятся к выполнению задач в зоне СВО под Самарой // официальный интернет-сайт министерства обороны РФ от 12 августа 2024
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40. Rottman 2011, p. 29.
41. Ames, Charles. "NVA and Viet Cong Infantry Weapons". Alpha Company. Archived from the original on 24 August 2012. Retrieved 16 November 2014.
42. Mountzouroulias, Andreas. "A soldier of the Armenian forces with an RPK-203 light machine gun. #Armenian forces still hold both #Turkey and Azerbaijan out of #NKR".^{[better source needed]}
43. Rottman 2011, p. 42.
44. 5.45-mm Maschinenpistole AK74 und leichtes Maschinengewehr PPK74 - Beschreibung und Nutzung [5.45-mm AK74 submachine gun and PPK74 light machine gun - description and use]. Ministerium für Nationale Verteidigung. 1985.
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Bibliography

• Rottman, Gordon (2011). The AK-47: Kalashnikov-series Assault Rifles. Osprey Publishing.

External links

• Ponomarev, Yuri (2010). "Битва трёх «К»" [The battle of the three "K"] (PDF). Kalashnikov (in Russian). No. 6. pp. 76–85. Archived from the original (PDF) on April 13, 2022. (Covers the design competition.)
• "Soviet RPK-47 Light Machine Gun Manual". Kalashnikov. 1973.^{[permanent dead link‍]}
• "Light Machine Gun RPK". EnemyForces.com. Archived from the original on April 20, 2023.
• "RPK". Modern Firearms. 27 October 2010.
• "RPK-74". Modern Firearms. 27 October 2010.
• "RPK Light Machine Gun". Kalashnikov.guns.ru. Archived from the original on 2007-09-29.
• "Technical data, instructional images and diagrams of the RPK-47M". Sovposters (in Russian). Archived from the original on April 12, 2023.
• Video of operation (RPK-74) on YouTube (in Japanese) Archive