Knight's Armament Co. (KAC) of Vero Beach, FL is in production of the Mk 11 Mod 0/1 and M110 Semi-Automatic Sniper Systems for the Navy, Marine Corps, and U.S. Army.  The rifle itself is a scaled-up version of the venerable Eugene Stoner designed AR-15/M16 rifles in 7.62x51 NATO.  Loosely based on the original Stoner AR-10 design, the Mk 11 (and later M110) are more like the 5.56 NATO rifles than the earlier AR-10 7.62 NATO rifles.

 

The Mk 11 series rifles are refined versions of the SR-25 7.62 NATO sniper rifle originally designed for commercial sale to law enforcement agencies by Eugene Stoner and C. Reed Knight, Jr.  The rifle uses a KAC-designed 10 or 20-round 7.62 NATO steel magazine.  The rifle has a 20-inch match barrel free-floated in a URX modular Picatinny Mil-Std-1913 rail sleeve.  Unlike the 5.56 NATO rifles, the 7.62 NATO upper receiver does not have the forward assist feature, is more massive, and has an integral Mil-Std-1913 rail.  Controls are similar to the M16A2/AR-15A2 series rifles, except the safety selector is ambidexterous.  The rifle is designed to use the KAC-designed quick attach/detach suppressor.  Flip up iron sights are fitted in case the primary optical sight is removed or damaged.  The Mk 11 is fitted with a two stage match trigger and is semi-automatic only.  The rifle is designed for the M118LR 175-grain Special Ball sniping round @ 2,591 fps.  A Harris bipod is standard issue for the rifle.  Overall length is 45-5/8 inches with suppressor and weight is 15 lbs. 3 oz. (loaded).

 

 Above: The KAC Mk 11 Mod 1 rifle in 7.62 NATO.  This rifle has been modified to add a Magpul precision rifle AR10/SR25 adjustable sniper stock, Leopold 3 to 9 power sight, folding front and rear sights, KAC-designed suppressor, and Harris bipod.  Just above the bipod is the AN/PEQ-2A, Infrared Target Pointer, Illuminator, Aiming Light (ITPIAL).  (Photo: Redwolf Airsoft)