The MRE package is intended to get the job done with M4 carbines, and accommodates a fixed A2 entrance sight tower with carbine size gas method. It extends past the front sight base, delivering extra rail space for that mounting of tactical extras. Consists of 3 KAC 11 Rib Rail https://kac-ras-rail41740.vblogetin.com/32173090/the-kac-rail-diaries