The KAC M4 RAS (Rail Adapter System) was developed for use on the US military's 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 rifle's barrel nut via a clamp and screw arrangement, making it a very solid foundation upon which to mount tactical accessories.
This is manufacturer's part number 98064, but come in bulk pack, or are new rifle take-offs. These are not used. They are new production and sealed in milspec plastic packaging, and contain KAC factory markings and date of manufacture, like every factory RAS.
None.
Charlie's also carries Factory new, in box product, click here for M4 Knights Armament RAS rail with covers, new in box.
Knights Armament (KAC)