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The Garanin machine guns (Пулемёт Гаранина) were a series of general-purpose machine gun prototypes developed by Soviet designer Georgy Semenovich Garanin at OKB-575 in Kovrov. These guns were developed in the context of a contest, started in December 1955, for replacing the company-level RP-46 light machine gun and the battalion-level "heavy" (in the old sense of the term) machine gun SGM with a single new machine gun that could fulfill both roles using different mounts.

Garanin's first prototype for this competition operated on the principle of lever-delayed blowback. This prototype was rejected in 1957 for failing to meet several of the technical requirements for accuracy and reliability. A later prototype of Garanin relied on gas operation; this one was rejected in 1960, because it was considered inferior to the front-runner designs of Nikitin and Kalashnikov. Ultimately, Kalashnikov's PK machine gun won the competition.

Overview (first variant)

The weapon was unusual among contemporary machine guns by its use of a lever-delayed blowback operation. When firing, the pressure pushing the case head rearward initiated an impulse on a cam that sent the bolt carrier rearward. After a certain distance, a link (in this case the firing pin) pulled the bolt head, hence extracting the spent case. Since there was no primary extraction, the chamber was fluted to allow powder gases to flow back, unsticking the case from the wall chamber like on Heckler & Koch type roller-delayed blowback weapons.

The machine gun could be used as a LMG with a bipod or as a medium machine gun with a tripod. When used with a tripod for continuous fire, the gun was fitted with a heavier barrel. In the LMG configuration, the machine gun was a relatively light weapon to carry. The lower receiver of the weapon came from an RPD with a modified stock.

See also

• KB-P-790
• List of Russian weaponry

References

1. ^ Семен Федосеев (2009). Пулеметы России. Шквальный огонь. Яуза / Коллекция / ЭКСМО. pp. 282–285. ISBN 978-5-699-31622-9.
2. Ponomaryov, Yury (2011). "Догнать и перегнать" [Overtake and Surpass] (PDF). Kalashnikov (in Russian) (2011–11). IPSC Russia, Association of Russian Gunsmiths: 64–73.
3. Сергей МОНЕТЧИКОВ, РУССКИЕ ОРУЖЕЙНИКИ: Создатель единого пулемета Archived 2015-02-26 at the Wayback Machine, Bratishka issue of July–August 2003 (in Russian)

External images

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• 2B-P-45

v t e Delayed blowback firearms
Lever delayed	AA-52 Benelli B76 Cristóbal Carbine Danuvia 43M Dlugov FAMAS FN Five-seven FNAB-43 Garanin MAC-58 Sterling 7.62 ST Kinetics CPW TKB-517 AVB-7.62
Roller delayed	Calico M960 CEAM Modèle 1950 CETME Ameli CETME rifle CETME Model L Gerät 03 prototype HK G3 HK G41 HK MP5 HK P9 HK PSG1 HK MSG90 HK SR9 HK UCP HK21 HK33 HK43 HK SL6 HK SL7 MG 45 PTR 91F SIG 510 SIG MG 710 SRM Arms Model 1216 StG 45(M)
Gas delayed	Arsenal P-M02 Grossfuss Sturmgewehr Heckler & Koch P7 M-77B Steyr GB Volkssturmgewehr 1-5 Walther CCP
Hesitation locked	M50 Reising Remington Model 51 Remington Model 53 Remington R51 SIG MKMO
Flywheel delayed	Barnitzke machine gun MGD PM-9
Radial delayed	CMMG MkG
Toggle delayed	Schwarzlose machine gun T1E3 Model 32 semi-automatic rifle
Vector delayed	Jatimatic KRISS Vector

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