YakB-12.7 machine gun

Aircraft rotary heavy machine gun

Yak-B machine gun
Yakushev-Borzov YakB-12.7 machine gun in the Prague Aviation Museum)
Type	Aircraft rotary heavy machine gun
Place of origin	Soviet Union
Service history
In service	1973–present
Production history
Designer	KBP
Manufacturer	KBP Instrument Design Bureau
Specifications
Mass	45 kg (99 lbs), cartridge weight 0.130 kg, bullet weight 0.048 kg
Length	1.345 m (4 ft)
Width	0.13 m (5.1 in)

Shell	12.7×108mm
Caliber	12.7 mm
Barrels	4
Action	Gas-operated
Rate of fire	4,000–5,000 rounds/min^{[citation needed]}
Muzzle velocity	810 m/s (2,657 ft/s)

The Yakushev-Borzov YakB-12.7 mm^[1] is a remotely controlled 12.7×108mm caliber four-barrel rotary heavy machine gun developed by the Soviet Union in 1973 for the Mil Mi-24 attack gunship and low-capacity troop transporter, with 1470 rounds, which can also be mounted in GUV-8700 machine-gun pods with 750 rounds. It has a high rate of fire (4–5,000 rounds per minute) and is also one of the few self-powered guns of the Gatling type (i.e. it is gas-operated, rather than requiring an external motor to operate).

On the Mi-24 it is mounted in the VSPU-24 undernose turret, with an azimuth of 60° to either side, an elevation of 20°, and a depression of 60°. The gun is slaved to the KPS-53AV undernose sighting system with a reflector sight in the front cockpit.

It was replaced by the fixed, side-mounted GSh-30K or the swivel-mounted GSh-23L in the late mark of the Mi-24 helicopters, as it did not provide enough firepower against dug-in or lightly armored targets that did not necessitate a rocket attack^[2] but it is still used on Mil Mi-24,^[3] Mil Mi-36, and Mil Mi-40 helicopters.

Users

Russia
Syria

Former users

Machine gun on the Mi-24.
Soviet Union

References

^ "Yakushev-Borzov Yak-B". Weaponsystems.net. Retrieved 2018-04-22.
^ "[1.0] Hind Variants / Soviet Service". Faqs.org. Retrieved 2018-04-22.
^ Mladenov, Alexander (2012-07-20). Mil Mi-24 Hind Gunship. ISBN 9781846039546.

Koll, Christian (2009). Soviet Cannon: A Comprehensive Study of Soviet Arms and Ammunition in Calibres 12.7mm to 57mm. Austria: Koll. p. 64. ISBN 978-3-200-01445-9.

External links

KBP machine guns Yak-B
Enemy Forces Mi-24

Russian and former Soviet aircraft ordnance

Missiles

Air-to-air	K-5 R-3 R-8 R-38 R-4 R-40 R-23 R-60 R-33 R-27 R-73 R-77 R-37
Air-to-surface	Kh-23 Kh-25 Kh-28 Kh-29 Kh-45 Kh-58 Kh-59 LMUR
Anti-ship, cruise	KS-1 K-10S Kh-20 Kh-22 KSR-2 KSR-5 Kh-55 Kh-15 Kh-31 Kh-35 Kh-45 Kh-90
Anti-tank	3M6 Shmel 9M17 Fleyta 9M14 Malyutka 9K114 Shturm 9M120 Ataka 9K121 Vikhr

Rockets

RS-82/132
S-5
S-8
S-13
S-24
S-25

Aerial bombs

Autocannons,
machine guns

7.62 mm	SIBEMAS PV-1 DA ShKAS Savin–Norov GShG-7.62
12.7 mm	ShVAK 12.7 mm Berezin UB Afanasev A-12.7 YakB-12.7
20 mm	Sh-3 ShVAK 20 mm Berezin B-20
23 mm	VYa-23 NS-23 NR-23 AM-23 R-23 GSh-23 GSh-6-23
30 mm	NR-30 GSh-30-1 GSh-30-2 GSh-6-30 2A42
37 mm	Sh-37 NS-37 N-37
45 mm	NS-45
57 mm	N-57/OKB-16-57 RShR-57/OKB-15-57

Multiple-barrel firearms

Cape guns Drillings Vierlings
Survival guns	Chiappa Double Badger Chiappa M6 Survival Gun M6 Aircrew Survival Weapon M30 Luftwaffe drilling Marble Game Getter Savage Model 24 Savage Model 42 Springfield Armory M6 Scout TP-82 Cosmonaut survival pistol
Multi-weapons	80.002 AICW NIVA XM1970 PAPOP QTS-11 Scicon PDW SPIW S&T Daewoo K11 XM29 OICW

Submachine guns

Machine guns

Caldwell machine gun EX-17 Heligun Fyodorov–Shpagin Model 1922 Gardner gun Gast gun In-Line MG14z Mitrailleuse Montigny mitrailleuse Nikonov machine gun Nordenfelt gun Ribauldequin RMG 7.62 Twin Bren Type 89 Type 100 Volley gun
Rotary type	Eli gun Gatling gun GAU-19 GShG-7.62 Fokker-Leimberger Hotchkiss revolving cannon MGG-50 M134 Minigun XM214 Microgun YakB-12.7

Non-lethal

Flash-ball
Osa

Amphibious firearms

Flare guns

Nambu Type 90

Grenade launchers

Cannon

Modern rotary cannons

German Empire

7.92×57mm	Fokker-Leimberger

China

7.62×54mm	CS/LM12 Hua Qing Minigun Various other 7.62×54mm weapons
12.7×108mm	CS/LM5 Various other 12.7×108mm rotary guns
14.5×114mm	CS/LM16 Various other 14.5×114mm rotary guns
30×165mm	Type 1130 CIWS Type 730 CIWS

Iran

7.62×51mm	Akhgar
12.7×108mm	Muharram/Nasr
23×115mm	Asefeh

Poland

12.7×99mm	WLKM

7.62x54R	Panchenkov Slostin TKB-041 GShG-7.62
12.7×108mm	Yak-B 12.7
23×115 mm	GSh-6-23
30×165mm	GSh-6-30 AO-18

United States

.22LR	Neal submachine gun Zinsner rotary gun
5.56×45mm NATO	PF556 XM214 Microgun XM556
7.62×51mm NATO	XM133 Minigun M134 Minigun
12.7×99mm NATO	Dillon Aero 503D GAU-6 GAU-19
20×102mm	M61 Vulcan M195 M197 XM301
25×137mm	GAU-12 Equalizer GAU-22/A
30×113mm	XM188
30×173mm	GAU-8 Avenger GAU-13/A
37×219mm/35×228mm	T250