is very similar to the KAC M110 Semi-Automatic Sniper System, though the M110 utilizes the newer URX Rail system, a length-adjustable fixed buttstock, and an integrated flash suppressor. Starting in late 2011, USMC snipers began to replace Mk 11 MOD 0 rifles with the M110 on a one-for-one basis. Users : Australian Army, Royal Australian Air Force Airfield Defence Guards and Police Tactical Groups. : IDF special forces. : Philippine National Police Special Action Force, Philippine Army Light Reaction Regiment : GROM. : Republic of Korea Navy Special Warfare Flotilla : Royal Thai Army. : Gendarmerie General Command : United States Military Gallery See also Mk 12 Special Purpose Rifle List of individual weapons of the U.S. Armed Forces References External links Knight's Armament Company – SR-25 Series 7.62 mm Rifle Modern Firearms Site 7.62×51mm NATO firearms Police weapons Semi-automatic rifles Sniper rifles of the United States United States Marine Corps equipment ArmaLite AR-10 derivatives Designated marksman rifles Military equipment introduced in the 1990s