The MRE package is created to get the job done with M4 carbines, and accommodates a fixed A2 front sight tower with carbine size gas system. It extends past the front sight foundation, furnishing added rail space to the mounting of tactical add-ons. Involves a few KAC eleven Rib Rail https://knightsarmamentm4quadrail32974.theblogfairy.com/26354405/the-definitive-guide-to-kac-ras-rail