http://soldiersystems.net/2019/10/29...s-armament-co/
USSOCOM To Buy M110K1 Upper Receivers In 6.5CM From Knight’s Armament Co
According to a pre-solicitation notice published yesterday by Naval Surface Warfare Center (NSWC) Crane, Knights Armament Company has offered to the Government an improved, capability upgrade to the upper receiver assembly for the M110K1 Semi-Automatic Sniper System (SASS). The new upper receiver is 6.5mm Creedmoor (versus 7.62mm, CLIN 0001 on current contract) and provides longer distance shots and increased range.