Knights M4 RAS 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 AR15 platform. This nonfree float handguard is a simpletoinstall dropin upgrade that features genuine MilSpec M1913 Picatinny Rails along its entire length. What sets the M4 RAS apart from other 2piece 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.Rifle Requirements The M4 RAS is a dropin replacement part for standard 2piece polymer M4type handguards. The rifle must have a carbine length gas system delta ring assembly fixed front sightgas 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 AR15SR15 based platforms only not compatible with SR25 variants. Installation instructions are included.
STOCK NOTICE: This item is NOT marked "In Stock". We will contact you within 12-24 hours by email if your order is on backorder with our distributor and will take longer than the 5-7 business days it takes us to ship out. Please do not order if you need this item shipped immediately.