What sets the M4 RAS besides other two-piece quad rails on the market is the fact it securely locks into the rifle’s barrel nut through a clamp and screw arrangement, making it a really sound Basis upon which to mount tactical equipment. Includes a few KAC 11 Rib Rail Panels. https://kac-ras-rail40594.blog2freedom.com/26725415/top-latest-five-kac-rail-urban-news