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Yak-B Gatling gun
Letecké muzeum Kbely (15).jpg
Yakushev-Borzov YakB-12.7 machine gun in the Prague Aviation Museum)
Type Gatling gun
Place of origin  Soviet Union
Production history
Manufacturer Instrument Design Bureau
Weight 45 kg (99 lbs), cartridge weight 0.130 kg,

bullet weight 0.048 kg

Cartridge 12.7×108mm
Barrels 4
Rate of fire 4000–5000 rounds/min
Muzzle velocity 810 m/s (2,657 ft/s)

The Yakushev-Borzov YakB-12.7 mm is a remotely controlled 12.7×108mm caliber four-barrel Gatling gun developed by the Soviet Union 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 and is also one of the few self-powered guns of the Gatling type.

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, chin-mounted GSh-30K or the smaller caliber but 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.[1]

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