What sets the M4 RAS apart from other two-piece quad rails available is usually that it securely locks to the rifle’s barrel nut by using a clamp and screw arrangement, which makes it an extremely reliable foundation on which to mount tactical add-ons. Consists of three KAC 11 Rib Rail https://simontepfn.blue-blogs.com/32758940/indicators-on-kac-ras-rail-you-should-know