The UTG Pro AR15 15″ Super Slim Free Float Keymond Handguard is free-floating with proprietary Barrel nut design. 112 Keymod compatible slots on 7 Keymod compatible slot tracks for mounting keymod compatible rails and accessories with diverse applications. Fits carbine mid-length or rifle length AR15. 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 accessory options. Features integral anti-rotation tabs for alignment and locking with upper receiver. Ergonomic octagonal profile with 96 well placed grooves on rail surface for solid grip air-accelerated heat release and comfort. Scalloped top picatinny rail edges for no-snag mounting. Precision machined from 6061-T6 aircraft grade aluminum with hard black anodizing. 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. Made in USA.