Given the twin importance of stopping power and snipers, soldiers asked for an accurate 7.62 mm NATO caliber marksman’s weapon, that could also be used in a close urban fight. The American requirement for a new semi-automatic sniper system(SASS) was released at the end of 2004, In the end, the SASS contract was awarded in late September 2005 to Knight’s Armament Company of Titusville, FL, who submitted a modified version of the SR-25 rifle and adopted by the U.S. military following the 2005 US Army Semi-Automatic Sniper Rifle (XM110 SASR) competition. It is the M110.
The M110 SASS was a highly-modified Armalite AR-10 offshoot but feature additional refinements instituted by KAC to maximize parts commonality with the AR-15 design, improve weapon reliability, and increase accuracy. with improved tactical functionality and logistical capabilities refined.