The Mid-Length Free Float Quad Rail is a 1-piece free float handguard for the AR-15 platform. It's quad rail design offers plenty of picatinny rail to mount accessories. The T-marked rails allow accessories to be removed and replaced with ease and ensures consistent replacement. A continuous top rail provides a monolithic look with a standard flat-top receiver.The 10 inches free float quad handguard rail features a 1-piece design and will mount over low profile gas blocks. Made of black anodized aircraft grade aluminum and compatible with most direct impingement gas systems. The T-marked rails allow accessories to be removed and replaced with ease and continuous top rail provides a monolithic look with standard flat-top receivers. Features: Black anodized aircraft grade aluminum T-marked rails accepts all standard Weaver/Picatinny 1913 accessories Compatible with most direct impingement gas systems 1-piece design, includes barrel nut for mounting No gap for monolithic rail look Mounts over low profile gas blocks