The Reptilia 9.40" M-LOK Handguard is a robust, free-float rail system designed for the AR15 platform and compatible with all M4-profile upper receivers. This handguard utilizes Reptilia's innovative turnbuckle mounting technology, which employs a reverse-threaded nut assembly to apply high-tension pressure against a standard 1.25-inch barrel nut for a rock-solid, anti-rotational fit. Machined from billet 7075-T6 aluminum, it features seven sides of M-LOK mounting slots and a full-length Picatinny top rail with angled front cuts to provide better clearance for muzzle devices or suppressors. The system is finished with a durable MIL-STD Type III hardcoat anodizing in Flat Dark Earth, offering a slim, lightweight, and snag-free profile for professional duty or tactical use. Reptilia 9.40" M-LOK FDE Handguard for M4 Upper Receivers 100-331