"The UTG Pro AR15 9"" Super Slim Free Float Keymod Compatible Rail Handguard with proprietary barrel nut design. 63 Keymod compatible slots on 7 Keymod compatible slot tracks for mounting Keymod compatible rails and accessories with the most flexibility in diverse applications. Fits pistol length, carbine length or mid-length ar15 rifles. Super lightweight with 23 slot 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 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 not exceeding 1"" diameter."