The NcSTAR M4 Quad Rail System is a drop-in RIS that replaces the original M4 handguards. This RAS is designed for carbine-length M4s, and clamps onto the front hanguard cap and the rear barrel nut. This will easily install without modification on any standard spec AR15 carbine.
The Quad Rail System features full Picatinny rails for attachment of accessories, and makes an ideal mount for flashlights, grips, or other accessories.
NcSTAR M4 Rail System Features:
-Easy Install on any Carbine length AR15
-Aircraft Aluminum Construction