Now you can have the versatility of a rifle length quad rail on your carbine length gas system AR-15, without having to give up your front sight post. The Firefield Free Floating Quad Rail with Cutout is designed to fit perfectly around the front sight post, giving you more rail space to mount accessories. The design insures that no part of the rail is touching the barrel itself to maximize your carbine's accuracy potential.
Specifications and Features:
Hard anodized aluminum construction
Free float design
Mil-Std 1913 Picatinny rails
Weight 1.05 lbs