Yak-B 12.7mm machine gun

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Yak-B Gatling gun
Yakushev-Borzov YakB-12.7 machine gun mounted on a Mi-24 helicopter (Museum of HuAF, Szolnok, Hungary)
Type	Gatling gun
Place of origin	Soviet Union
Production history
Manufacturer	Instrument Design Bureau
Specifications
Weight	45kg, cartridge weight 0.130, bullet weight 0.048kg

Cartridge	12.7x108 mm
Rate of fire	4000-5000 rounds/min
Muzzle velocity	810 m/s

The Yakushev-Borzov YakB-12.7 mm is a remotely controlled 12.7x108mm caliber four-barrel gatling gun intended for the Mil-Mi-24 attack gunship and low-capacity troop transporter with 1470 rounds, but can also be mounted in GUV-8700 machine-gun pods with 750 rounds. It has a high rate of fire and is also one of the few self powered guns of the gatling type.

On Mi-24 it's mounted in VSPU-24 undernose turret, with a field of fire 60 degrees to each side, 20 degrees up, 60 degrees down. The gun is slaved to the KPS-53AV undernose sighting system with a reflector sight in the front cockpit.

It was replaced by larger caliber flexible GSh-23L or fixed chin-mounted GSh-30K in the late mark of the Mi-24 helicopters due to not doing enough damage to light armored targets that were not worth wasting rockets on.^{[citation needed]}