15" M-LOK Super Slim Free-floating Handguard with Proprietary Barrel Nut Design; 56 M-LOK Slots on 7 Slot Tracks for Mounting M-LOK Rails and Direct Accessories, Easily Tailoring the Rifle to the User's Specific Requirements; Designed for Standard Mil-spec AR15 Upper Receiver; Super Lightweight with 37 Slot Picatinny Top Rail, Flush Fitting and Continuous with Flat Top AR15 Upper Receiver Providing Ample Real Estate for Optics and Other Accessories; Includes 2 M-LOK Accessories, an 8 Slot Picatinny Rail Section for Accessory Mounting and a QD Sling Swivel Adaptor for Sling Swivel Attachment, Ready for Use Right Out of the Box; Integral Anti-rotation Tabs for Accurate Alignment with the Upper Receiver while Completely Preventing the Handguard From Rotating Under Heavy Use; Ergonomic Octagonal Profile with Grooved Surface for a Solid, yet Comfortable Grip for Fast and Seamless Firearm Handling; Scalloped Top Picatinny Rail Edges for Easy and Snag Free Accessory Mounting; Precision Machined from 6061-T6 Aircraft Grade Aluminum with Matte Black Hard Coat Anodize; 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