What sets the M4 RAS other than other two-piece quad rails out there is usually that it securely locks on the rifle’s barrel nut through a clamp and screw arrangement, making it an extremely reliable Basis on which to mount tactical equipment. Posted by BRAD on twenty third Jan 2020 https://kac-m4-ras75184.getblogs.net/61997269/indicators-on-kac-ras-m4-you-should-know