ASh-12.7

The ASh-12.7 (АШ-12.7, which stands for "Автомат штурмовой 12.7мм" or "automatic assault 12.7mm") battle rifle is a dedicated CQB/Urban Operations weapon, developed by TsKIB SOO ("Central Design and Research Bureau of Sporting and Hunting Arms"),[1] a subsidiary of the KBP Instrument Design Bureau of Tula, Russia, by request from the Russian Federal Security Service (FSB).[2] The weapon was designed with extreme short-range stopping power in mind for FSB urban combat units. According to the Russian press, the first batch of ASh-12.7 assault rifles were delivered to the FSB in late 2011.

ASh-12.7
ASh-12 Bullpup battle rifle
TypeBullpup battle rifle
Place of originRussia
Service history
In service2011–present
Used byFederal Security Service
Production history
DesignerTsKIB SOO
ManufacturerIzhmash
Produced2010–Present
Specifications
Mass6 kg (13 lb)
Length1,020 mm (40 in)
Cartridge12.7×55mm STs-130
Caliber12.7 mm (0.50 in)
ActionGas-operated
Muzzle velocity290–315 m/s
Effective firing range100–300 metres (330–980 ft)
Feed system10/20-round detachable box magazine
SightsIron sights, Picatinny rail

Overview

The ASh-12.7 is a dedicated "Close/Urban combat" weapon for high-risk law enforcement operations, which must combine high stopping power with limited penetration and a short 'dangerous range', to avoid collateral damage to innocent bystanders or hostages. To achieve these goals, the designers of the ASh-12.7 assault rifle developed special large-caliber ammunition, loaded with a variety of bullets. Ammunition for the ASh-12.7 is the 12.7×55mm straight-walled, rimless brass case based on .338 Lapua Magnum, originally developed by the same organization that developed the silenced VKS sniper rifle.[3] Standard loading for the ASh-12.7 is a lightweight, subsonic bullet with an aluminum core, exposed at the front and hollowed at the rear and partially enclosed into a bi-metal jacket. The cartridge has a bullet weight of 48.14-76.08 grams and a muzzle velocity of 290–315 metres per second. It has several loadings; light, heavy and a duplex load with two light bullets.[2]

This new Russian ".50-caliber" cartridge bears certain conceptual similarities to a family of big-bore cartridges developed in the US for the AR-15 platform, such as .458 SOCOM, .499 LWR or .50 Beowulf, although the Russian cartridge uses a longer case and generally a heavier bullet load - its US counterparts are usually loaded with bullets weighing 19 grams/300 grs and up.[2]

The ASh-12.7 assault rifle has a bullpup layout, with a stamped steel receiver and a polymer housing/stock. It has a short recoil operated system, which means after it fires the round, the barrel slides backwards ands eject the spent shell casing. It is unknown what kind of locking system it uses, however it most likely uses a 2 or 3 lug rotating bolt. Firing controls include two separate levers; a fire mode selector (Semi/Auto) at the rear and an ambidextrous safety (Safe/Fire) above the pistol grip. There are several configurations of the basic rifle. The first one features an integral carrying handle with a built-in rear diopter sight and a folding front sight. A length of Picatinny rail is installed on the carrying handle to accept various optical sights. Another version that was observed on some photos features a "flat top" configuration with a Picatinny rail running on top of the receiver, as well as front and rear sights installed on folding bases. Other variations have a Picatinny rail below the fore end or a 40mm underbarrel grenade launcher. Muzzle devices include a muzzle brake or a quickly-detachable suppressor.[2] The equipment of the Russian law enforcement with the advanced ShAK-12 assault rifles is underway.[4]

Ammunition
  • 12,7x55mm Легкая Пуля (Legkaya Pulya (LP) > "Light Bullet") [Bullet Weight: 7 grams (108 grains)] Light supersonic saboted lead bullet with an aluminum core.
  • 12,7x55mm Тяжелая Пуля (Tyazhelaya Pulya (TP) > "Heavy Bullet") [Bullet Weight: 33 gram (509 grains)] Heavy subsonic lead bullet.
  • 12,7x55mm Двухпульный (Dvukhpul'niy (DP) > "Double-Bulleted", "Duplex Bullet") [Bullet Weight: 17 grams (262 grains) each] Two bullets loaded inline.
  • 12,7x55mm Бронебойная Пуля (Broneboynaya Pulya (BP) > "Armor-Piercing Bullet") [Bullet Weight: 18 grams (277 grains)] Lead bullet with an armor-piercing core.

Users

See also

References
  1. Johnson, Steve (2013). "New Russian TsKIB ASh-12 .50 Cal (12.7x55mm) Bullpup Rifle". thefirearmblog.com. Retrieved 30 May 2013.
  2. Popenker, Maxim (2013). "ASh-12.7 assault rifle". world.guns.ru. Retrieved 30 May 2013.
  3. 12,7х55 СЦ-130 Archived June 17, 2013, at Archive.today
  4. https://sputniknews.com/military/201812131070638043-russia-weapons-super-gun-defence/
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