The Reptilia 15" M-LOK Handguard is a full-length, free-float rail system designed to provide maximum modular real estate for the AR15 platform and M4 upper receivers. Utilizing Reptilia's patented turnbuckle mounting technology, it achieves a secure, anti-rotational lockup by applying high-tension pressure against a standard 1.25-inch barrel nut with a reverse-threaded nut assembly. Precision-machined from 7075-T6 billet aluminum, this 15-inch rail offers a slim, lightweight profile with seven sides of M-LOK slots and a full-length Picatinny top rail. The front of the handguard features angled cuts for improved ergonomics and clearance around muzzle devices, all protected by a rugged MIL-STD Type III Flat Dark Earth hardcoat anodized finish. Reptilia 15" M-LOK FDE Handguard for M4 Upper Receivers 100-340