Reptilia 13\" M-LOK Black Handguard for M4 Upper Receivers 100-359

The Reptilia 13" M-LOK Handguard is a premium free-float rail system designed for the AR15 platform and compatible with all M4 upper receivers. It features Reptilia's patented turnbuckle technology, which utilizes a reverse-threaded nut assembly to create high-tension pressure against a standard 1.25-inch driven barrel nut, providing a rock-solid, anti-rotational lockup. Precision-machined from 6061-T6 aluminum extrusion, this lightweight handguard offers seven sides of M-LOK mounting slots. It has an internal diameter of 33.5 mm and MIL-STD Type III, Class 2 hard anodize. Barrel nut torque spec: 50 ft-lbs; turnbuckle torque spec per manufacturer instructions. Made in the USA and includes a lifetime warranty against manufacturer defects.