Knight's Armament Company

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Knight's Armament Company (KAC, also Knight's Manufacturing Company) is an American firearms and firearms parts manufacturer.

It is owned by C. Reed Knight and based in Titusville, Florida. KAC is best known for producing the Rail Interface System (RIS) and the Rail Adapter System (RAS) grips for military firearms. The United States military as well as armed forces and police around the world use KAC RIS/RAS conversions for many popular firearms, including the American M16/M4 rifles and the popular Heckler & Koch MP5 series sub-machine guns. The RIS/RAS systems allow the mounting of accessories to firearms without additional tools or modifications. These can include tactical flashlights, laser targeting units, bipods, and vertical foregrips. In addition, KAC is known for producing sound suppressors for the Heckler & Koch Mark 23 SOCOM pistol and for the Special Operations Peculiar MODification (SOPMOD) M4 carbine package in use by United States Special Operations Command (USSOCOM). Finally, Knight's Armament produces a line of firearms including the semi-automatic SR-15 line of rifles, the fully-automatic SR-16 Law Enforcement/Military carbine, the semi-automatic SR-25 sniper rifle, and the SR-25 based Mark 11 Mod 0 Sniper Weapon System. The SR-47 and SR-50, chambered for 7.62x39mm and 12.7x99mm, respectively, are discontinued.