Midwest Industries CRM HD 308 High Combat Rail AR-10 M-LOK Handguard 13.5in Black. Engineered For Maximum Rigidity And Extreme Use This Next-generation Handguard Surpasses Anything We've Produced Before Delivering Unmatched Reliability For The Most Demanding Shooters. Constructed From 6061 Hardcoat Anodized Aluminum The Combat Rail Hd Features A Robust 1.750 Outside Diameter And 1.250 Inside Diameter Fully Dehorned And Deburred For A Sleek User-friendly Finish. Its Innovative Design Includes A Longer 4140 Barrel Nut For Superior Stability Paired With Machined Heavy-duty Anti-rotation Tabs And Midwest Industries' Patented Torque Plate To Eliminate Forward Movement. Two Steel Anti-rotation Qd Sockets Are Strategically Placed For Maximum Strength And Minimal Gun Roll Ensuring Optimal Control In Dynamic Scenarios. With Seven Sides Of M-lok Compatibility And A 5-slot Polymer M-lok Rail Included The Combat Rail Hd Offers Versatile Accessory Mounting. Optimized For Minimal Point-of-impact Shift With Night Vision Aiming Devices It Guarantees Precision In Low-light Conditions. Proudly Made In The Usa And Backed By A Limited Lifetime Warranty The Combat Rail Hd Is The Ultimate Choice For Shooters Who Demand Excellence. Elevate Your Ar15 With Midwest Industries' Combat Rail Hd Today. Specifications for Midwest Industries CRM HD 308 Low Combat Rail AR-10 M-LOK Handguard: Manufacturer: Midwest Industries Color: Black Finish: Hard Coat Anodized Fabric/Material: 6061 Aluminum Gun Make: AR Platform Gun Model: AR-10 Gun Type: Rifle Handguard Type: Free-Float Gun Rail: M-LOK Inner Diameter: 1.3 in Outer Diameter: 1.85 in Height: 3.9 in Features of Midwest Industries CRM HD 308 Low Combat Rail AR-10 M-LOK Handguard Shape and profile are designed for maximum rigidity and extreme use Minimal point of impact shift for NV aiming devices Longer 4140 Barrel nut to provide stability of the handguard Machined heavy-duty anti-rotation tabs Uses the MI patented torque plate to provide no forward movement of the handguard Two steel anti-rotation QD sockets for maximum strength and placed to minimize gun roll Package Contents: Midwest Industries CRM HD 308 Low Combat Rail AR-10 M-LOK Handguard Midwest Industries MI-CRMHD-308L-13.5: AR-10 CRM HD 308 M-LOK Low Combat Rail Handguard 13.5in Black