What sets the M4 RAS in addition to other 2-piece quad rails available on the market is that it securely locks to the rifle’s barrel nut by using a clamp and screw arrangement, which makes it an incredibly reliable foundation on which to mount tactical add-ons. Contains three KAC 11 https://kac-ras-rail18407.onzeblog.com/26590546/the-kac-rail-diaries