15" M-LOK Super Slim Free Float Handguard with Proprietary Steel Barrel Nut Included 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 Compatible with Left or Right Handed Standard Mil-spec AR15 Upper Receivers Ultra Slim Design with Lightening Cuts Made Throughout the Handguard to Massively Reduce Weight, While Still Allowing for a High Level of Modularity 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 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 Ergonomically Grooved Handguard Surface and Overall Octagonal Profile Features Additional Left and Right Sided Grip Serrations 3-Slot Top Picatinny Rail Found at the Forward and Rearward of the Handguard Precision Machined from 6061-T6 Aircraft Grade Aluminum with a Black & Blue 2-Tone Anodization Barrel Nut Wrench, Hardware, and Installation Instructions Included for Quick Out of the Box Installation 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 Proudly Designed and Made in USA