If you don't care about NR status because you only shoot on a range, then I highly recommend a lightly used Lewis Machine and Tool (LMT) Modular Weapon System (MWS). This is the exact same rifle as was adopted by the British Army as the L129 Designated Marksman Rifle during the Afghanistan campaign. LMT Lower Receivers are manufactured alongside KAC and are interchangeable. The M WS beat out all of the contemporary DMR contenders to win that contract. In other words, the British Army has done your homework for you! I have one with both the 20" .308 stainless match barrel and the 20" 6.5 Creedmore stainless match tube. It is a tack-driver, next only to my precision bolt gun (Cadex .308 Guardian Lite). I cannot recommend the LMT MWS highly enough!