The MRE package is designed to work with M4 carbines, and accommodates a set A2 front sight tower with carbine size gasoline system. It extends past the entrance sight base, offering more rail space to the mounting of tactical accessories. Involves 3 KAC 11 Rib Rail Panels. When stowed from https://kacrail07306.laowaiblog.com/26332970/indicators-on-kac-ras-rail-you-should-know