Knight's Armament M4 RAS converts AR-15, M4, M4A1 carbines with Mil-Spec M4 profile (.840" diameter) barrels into the MWS (Modular Weapon System) configurations. Installs without special gunsmithing tools. As issued to US troops for the M4 and M4A1 carbines. Includes a quantity of 3 black KAC 11 Rib panels, plastic wrap case, and bonus of a KAC vertical forward grip. All for $325 shipped!
