During the United States War on Terror after the September 11th attacks, the U.S. Army realized they needed a weapon system that could be accurate at longer engagement distances, maneuverable for close urban combat, and carried a round more powerful than that of the traditional 5.56mm that was being used.  Coupled with the increased need for snipers, the American military opened up a bidding contract for their SASS or Semi Auto Sniper System program.  Among the many companies that entered in 2004, it was KAC (Knights Armament Company) in Titusville, Florida that won the bid in 2005.

VFC (KAC) M110 SASS GBB Airsoft Rifle (TAN)
1/1 Scale High Power Assembled Gas Powered Airsoft GBB
Full licensed by Knight's Armament Company (KAC)
Semi-Automatic Shooting Mod