Designed to Fit with Standard Gas Tube and Barrel Diameter Not Exceeding 1″ Not Compatible with Piston System, Re-designed or Over-sized Upper Receivers.Barrel Nut Wrench, Hardware, and Installation Instructions Included for Quick Out of the Box Installation.Precision Machined from 6061-T6 Aircraft Grade Aluminum with a Matte Black Hard Coat Anodize.3-Slot Top Picatinny Rail Found at the Forward and Rearward of the Handguard.Ergonomically Grooved Handguard Surface and Overall Octagonal Profile Features Additional Left and Right Sided Grip Serrations.Integral Anti-rotation Tabs and a Steel Barrel Nut Provide a Secure and Seamless Installation with the Upper Receiver While Completely Preventing the Handguard from Rotating Under Heavy Use.Includes 2 M-LOK® Accessories, an 8-Slot Picatinny Rail Section and a QD Sling Swivel Adaptor, Ready to Use Right Out of the Box.Ultra Slim Design with Lightening Cuts Made Throughout the Handguard to Massively Reduce Weight, While Still Allowing for a High Level of Modularity.Compatible with Left- or Right-Handed Standard Mil-Spec AR-15 Upper Receivers.Features 8 M-LOK® Slots on 3 Slot Tracks at the 3, 6 and 9 O’clock Positions for Mounting M-LOK® Rails and Direct Accessories.15″ M-LOK® Ultra Slim Free Float Handguard with Proprietary Steel Barrel Nut Included.

Ultra slim slim free float handguard