The Bravo Company BCM Gunfighter QRF is a 10" free-float quad rail handguard for the AR-15. All four faces carry full-length Picatinny rail, giving you continuous mounting real estate on the top, bottom, left, and right for optics, lights, lasers, and grips. Features: 10" free-float quad rail handguard Full Picatinny on all four faces 6061-T6 aluminum construction Steel barrel-nut free-float mount Four QD sling swivel sockets T/L/R/B rail position markings Built for AR-15 rifles chambered in 5.56. This is a quad-rail handguard and uses Picatinny throughout rather than KeyMod or M-LOK.