AR15 Super Slim Free Float Keymod Rail - 15"Manufacture ID: MTU019SSKThe UTG PRO AR15 15" SuperSlim Free Float Keymod Compatible RailFeatures:- Proudly Designed and Made in USA- 15" Single Rail, Super Slim, Keymod Compatible, Free-floating Handguard with Proprietary Barrel Nut Design - 112 Keymod Compatible Slots on 7 Keymod Compatible Slot Tracks for Mounting Keymod Compatible Rails and Accessories with the Most Flexibility in Diverse Applications- Fits Carbine Length, Mid-Length or Rifle Length AR15s - Super Lightweight with 37 Slot Extended Top Picatinny Rail to Form a Continuous Mounting Platform with the Receiver - Includes 2 Keymod Compatible Picatinny Rail Sections, 4 Slot and 8 Slot, for Limitless Accessory Customization Options - Features Integral Anti-rotation Tabs for Perfect Alignment and Rock-solid Locking with Upper Receiver - Ergonomic Octagonal Profile with 96 Well Placed Grooves on Rail Surface for Solid Grip, Air-Accelerated Heat Release and Superior Handling Comfort - Scalloped Top Picatinny Rail Edges for No-Snag Easy Accessory Mounting - Precision Machined from 6061-T6 Aircraft Grade Aluminum with Hard Black Anodizing - Simple and User Friendly Installation with Easy to Follow Instructions Included - Designed to Fit with Standard Gas Tube and Barrel Diameter Not Exceeding 1" Not Compatible with Piston System, Re-designed or Over-sized Upper ReceiversSpecifications:- Material: Aluminum- Weight: 12.1 oz- Pieces: 1- Rail Type: Picatinny/Weaver- No. of Rails: 1- Length: 15.3 inch- Width: 1.5 inch- Height: 1.97 inch