The 13” UTG Pro M-LOK AR15 Super Slim Free Float Handguard is designed for a standard Mil-spec AR15 upper receiver and has an ergonomic octagonal profile with a grooved surface for a solid, yet comfortable grip, providing you with fast and seamless firearm handling. It is precision machined from 6061-T6 aircraft grade aluminum with a matte black anodized hard-coat finish, which makes it super lightweight. Easily tailoring the rifle to the user’s specific requirements, it features integral anti-rotation tabs for accurate alignment with the upper receiver while completely preventing the handguard from rotating under heavy use. It also features 42 M-LOK(TM) slots on seven slot tracks for mounting M-LOK(TM) rails and direct accessories. It’s designed to fit with standard gas tube and barrel diameter not exceeding 1" and is not compatible with piston system, re-designed or over-sized upper receivers. It has a 31-slot Picatinny top rail that has been scalloped for easy, snag free accessory mounting and is flush fitting and continuous with the flat top AR15 upper receiver. Includes 2 M-LOK(TM) accessories, an 8-slot Picatinny rail section for accessory mounting and a QD sling swivel adaptor for sling swivel attachment. Ready for use right out of the box.