The Midwest Industries Combat Rail HD M-Lok Handguard features a patented 4140 heat treated torque plate with 6061 aluminum type 3 hard coat anodizing. It includes a continuous mil-std 1913 picatinny top rail with two integral anti-rotation QD sling sockets. It also includes 7 sides of M-Lok, a 5 slot polymer M-Lok rail, and is fully dehorned and deburred. FeaturesShape and profile are designed for maximum rigidity and extreme useMinimal point of impact shift for NV aiming devices Longer 4140 Barrel nut to provide stability of the handguardMachined heavy duty anti-rotation tabsUses the MI patented torque plate to provide no forward movement of handguardTwo steel anti-rotation QD sockets for maximum strength and placed to minimize gun rollBody constructed of 6061 Hardcoat anodized aluminumFully Dehorned and Deburred5-Slot polymer M-LOK Rail includedSeven Sides of M-LOK