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Kac M4 Carb Rail Adapter System 556


187 in stock

SKU: drsrKNAC98064 Categories: ,


Knights Armament Co.s M4 RAS 6.25″ (Rail Adapter System) was developed for use on the US militarys M4 Carbine, and with over 1 million rails issued to date, it is one of the most battle proven designs available for the AR-15 platform. This non-free float handguard is a simple-to-install, drop-in upgrade that features genuine Mil-Spec M1913 Picatinny Rails along its entire length. What sets the M4 RAS apart from other 2-piece quad rails on the market is that it securely locks to the rifles barrel nut via a clamp and screw arrangement, making it a very solid foundation upon which to mount tactical accessories. Includes three KAC 11 Rib Rail Panels. The M4 RAS is a drop-in replacement part for standard, 2-piece polymer, M4-type handguards. The rifle must have a carbine length gas system, delta ring assembly, fixed front sight/gas block, and round handguard end cap. Lighter barrel profiles work best (M4 or Government contours). Heavier barrel contours may require modification to the inside of the rail. For AR-15/SR-15 based platforms only; not compatible with SR-25 variants. Installation instructions are included. Aluminum black finish.

Features :

  • Includes three KAC 11 Rib Rail Panels
  • For AR-15/SR-15 based platforms only

Additional information

Weight 1.00 lbs
Dimensions 7.75 × 3.50 × 3.50 in

Armament, Company, Knights


Carbine, M4






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