This Midwest Industries handguard adds serious tactical capability with visual appeal and utility. The 15" long handguard is compatible with most AR platform upper receivers and features 7 sides of M-Lok adapter slots with a full-length Picatinny rail in the 12 o'clock position giving you the ability to attach accessories in almost any position on the handguard. The MI-CRM15 is made of a lightweight and durable 6061 Aluminum that is built to take a beating without weighing you down at a light 11.4 oz.Features:Barrel Nut and Wrench IncludedFeatures Patented 4140 Heat Treated Torque PlateContinuous MIL-STD 1913 Picatinny Top RailTwo Integral Anti-Rotation QD Sling SocketsSuper Slim 1.5" Outside and 1.3" Inside DiameterSeven Sides of M-Lok5-Slot Polymer M-Lok rail includedFully Dehorned and Deburred100% Made in the USA- Keeps America WorkingMI Lifetime Warranty IMPORTANT COMPATIBILITY NOTES!Due to the many different dimensions in BILLET UPPER RECEIVERS on the market, please contact your billet upper receiver manufacture to ensure fit of this handguard. This handguard is compatible with standard forged upper receivers.NOT FOR USE ON GAS PISTON AR's! For the best selection of Modern Sporting Rifle parts and accessories at the best prices, shop Palmetto State Armory!