The Midwest Industries MI HANDGUARD CRM HD M-LOK delivers unmatched rigidity and extreme-duty performance with a shape and profile designed to minimize point of impact shift for NV aiming devices, while a longer 4140 barrel nut provides enhanced stability of the handguard and machined heavy-duty anti-rotation tabs keep rotation to a minimum; built around the MI patented torque plate to prevent any forward movement of the handguard, and featuring two steel anti-rotation QD sockets placed for maximum strength and to minimize gun roll, this AR-compatible rail is constructed from Hard Coat Anodized 6061 aluminum and fully dehorned and deburred with Torx hardware for a clean, snag-resistant profile. The 5-slot polymer M-LOK rail spans all seven sides of M-LOK, offering versatile accessory mounting while the outside diameter measures 1.750 inches and the inside diameter 1.250 inches, ensuring robust fitment on compatible platforms. Made in the USA and backed by a lifetime warranty, this 10.5-inch black combat rail integrates seamlessly with AR-15 builds, providing reliable durability, precision alignment, and rapid accessory compatibility for demanding field and range use.