The MRE package is designed to do the job with M4 carbines, and accommodates a fixed A2 entrance sight tower with carbine length fuel procedure. It extends earlier the front sight foundation, furnishing further rail Place to the mounting of tactical add-ons. Consists of three KAC 11 Rib Rail Panels. https://knights-armament-rail52851.uzblog.net/the-single-best-strategy-to-use-for-knights-armament-m4-quad-rail-40824604