The Midwest Industries Ultra Lightweight One Piece Free Float M-LOK Handguard is constructed of rugged 6061 aluminum with a type 3 hard coat anodized finish. It features short Picatinny rail sections at the 12 o’clock position for the addition of backup iron sights” M-LOK mounting slots on 7 flats along its length” a pair of anti-rotation QD sling swivel sockets and an ultra lightweight titanium barrel nut and mounting screws. This 15″ handguard weighs a mere 8.9 oz. Includes a 5-slot M-Lok rail section and barrel nut wrench. Midwest Industries is a proven leader in the firearm industry. Made in the USA” focusing on the small details to make your rifle platform better.