ASh-12.7

The ShAK-12, (Russian: ШАК-12) originally under the name ASh-12.7 (, lit. "automatic assault carbine 12.7mm") is a dedicated CQB/Urban Operations weapon, developed by TsKIB SOO ("Central Design and Research Bureau of Sporting and Hunting Arms"), a subsidiary of the KBP Instrument Design Bureau of Tula, Russia, by request from the Russian Federal Security Service (FSB). 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 ShAK-12 rifles were delivered to the FSB in late 2011.

==Overview== The ShAK-12 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 ShAK-12 developed special large-calibre ammunition, loaded with a variety of bullets. The ammunition used for the ShAK-12 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. Standard loading for the ShAK-12 is a lightweight, subsonic ammunition with an aluminium 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 7-33 grams when utilizing ShAK-12 loads. It has several loadings; light, heavy and a duplex load with two light bullets.