SLR 8.5 inch SOLO Mid M-LOK 5.56 Handguard Black. 3 inch Inner Diameter. Mil-Spec hardcoat anodize. 7075 barrel nut w/hardcoat anodize. Free floating design. 4 QD swivel sockets. MLOK at 3 6 and 9 o'clock. Dual wedge mounting system. Billet anti-rotation insert. Anti-slip design. Barrel nut wrench INCLUDED. Continuous top rail design. Mil-Spec 1913 mounting rails. Included Accessories: Barrel Nut Barrel Nut Wrench Hardware Specifications for SLR SOLO Mid M-LOK 5.56 Handguard: Manufacturer: SLR Color: Black Finish: Melonite Fabric/Material: Aluminum Alloy Gun Make: AR Platform Gun Model: AR-15 Gun Type: Rifle Gun Rail: Picatinny Condition: New Included Accessories: Anti-rotation Insert Wedge Set Barrel Nut Mount Type: M-LOK Quantity: 1 Features of SLR SOLO Mid M-LOK 5.56 Handguard: 1.3 inch Inner Diameter. Mil-Spec hardcoat anodize. 7075 barrel nut w/hardcoat anodize. Free floating design. 4 QD swivel sockets. MLOK at 3 6 and 9 o'clock. Dual wedge mounting system. Billet anti-rotation insert. Anti-slip design. Barrel nut wrench INCLUDED. Continuous top rail design. Mil-Spec 1913 mounting rails. Included Accessories: Barrel Nut Barrel Nut Wrench Hardware Package Contents: SLR SOLO Mid M-LOK 5.56 Handguard SLR SOLO8.5ML-MID: 8.5 inch SOLO Mid M-LOK 5.56 Handguard Black