The UTG PRO Ultra Slim handguard, with its new minimalist look and feel, features weight reduction lightening cuts and a reduced top Picatinny rail with 3 slots at the front and rear. The Ultra Slim is equipped with M-LOK slots at the 3, 6, and 9 O'clock positions and at the heart of its installation, includes UTG PRO patented two-piece precision barrel nut, completely machined out of Titanium. A uniquely knurled surface on the left and right side of the handguard provides an aesthetically pleasing new look while providing addition grip traction for the user. Product Features Proudly Designed and Made in USA 15" M-LOK Ultra 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 Matte Black Hard Coat Anodize 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 US PAT. 8806792 Product Specifications MADE IN USA: Yes GAS TUBE CHANNEL WIDTH (IN): 0.44 GAS TUBE CHANNEL HEIGHT (IN): 1.70 922R COMPLIANT: Yes WARRANTY: Lifetime MATERIALS: 6061-T6 Aluminum COLOR(S): Black PARTS INCLUDED: 8 Slot Rail For Super Slim M-LOK Rail, Allen Wrench 3/32", Barrel Nut for Super Slim Free Float Handguards, Barrel Nut Wrench, Button Head Torx Drive Screw, Locking Ring for Super Slim Free Float Handgurads, M-LOK QD Sling Swivel Adaptor, Mount Users Manual, Spacer Ring, T20 Torx Wrench QD SWIVEL ADAPTOR TORQUE VALUE (IN-LB): 5 WEIGHT (OZ): 11.5 WEIGHT (G): 326.025