The keymod handguard has taken the AR industry by storm because of its simplistic accessory mounting and because they are extremely lightweight. Similar in design to our SLR series of handguards The S.L.K. is by far our lightest handguard to date but you can still add accessories throughout the entire rail handguard at the 3 6 9 and 12 o'clock positions. Features a full-length picatinny top rail and keymod mounting system at the 3 6 and 9 O'clock positions. - YHM's lightest handguard system at only 9.8 Oz. - The Top Rail is T-marked - Free-floating design - Hardcoat Anodized matte black to Military Specifications or better - The S.L.K. comes with all necessary tools for installation including: - S.L.K. Rifle Length Handguard - Barrel Nut -Barrel Nut Wrench - 4 screws (7/64ths Allen head) - 7/64ths allen wrench -Installation Instructions - Made from 6061-T6 aluminum - Plated a matte black finish