What sets the M4 RAS besides other two-piece quad rails available is the fact that it securely locks to your rifle’s barrel nut through a clamp and screw arrangement, which makes it an exceedingly solid Basis upon which to mount tactical add-ons. Consists of 3 KAC 11 Rib Rail Panels. https://eduardothshq.luwebs.com/27234086/the-greatest-guide-to-kac-m4-ras