Midwest Industries Combat Rail HD M-LOK Handguard Features The Midwest Industries Combat Rail HD M-LOK Handguard is designed for maximum rigidity and extreme use a shape and profile that helps minimize point of impact shift when running night vision aiming devices. A longer 4140 steel barrel nut adds stability compared to standard length nuts while machined heavy duty anti-rotation tabs lock the handguard firmly in place. Midwest s patented torque plate system prevents forward movement of the handguard under recoil keeping zero consistent shot after shot. Two steel anti-rotation QD sockets are positioned to maximize strength while minimizing gun roll when a sling is attached. Constructed from 6061 hardcoat anodized aluminum this 15 inch free float handguard is fully dehorned and deburred for comfortable handling in the field or on the range. It includes a 5-slot polymer M-LOK rail section and offers seven sides of M-LOK real estate for mounting lights grips bipods and other accessories. With a 1.85 inch outside diameter and 1.30 inch inside diameter it is purpose built for AR-10 platform rifles in .308. Made in the USA and backed by a lifetime warranty this handguard is built for shooters who demand a stable accessory ready foundation on their AR-10. Midwest Industries Combat Rail HD M-LOK Handguard Specifications Manufacturer: Midwest Industries Model: Combat Rail HD M-LOK Handguard Material: Aluminum Color: Black Length: 15 Outside Diameter: 1.85 Inside Diameter: 1.30 Compatible Hosts: AR-10 Style Firearms Available At: GrabAGun