Product DescriptionThe Geissele MK8 Super Modular Rail (SMR) is a rugged, lightweight free-float handguard built to add strength and modularity to AR-platform rifles. This 10.5-inch rail features Magpul M-LOK attachment points at the 3, 6, and 9 o'clock positions, plus the upper 45Adeg quadrants, giving you broad flexibility for mounting lights, lasers, grips, and other accessories. Venting in the lower 45Adeg quadrants helps improve heat dissipation while keeping weight down. The MK8 also incorporates Geissele's proprietary 2.25-inch barrel nut to increase surface contact at the receiver interface for a straight, true rail and improved repeatability during maintenance.Product Highlights10.5-inch free-float MK8 Super Modular Rail for AR-platform riflesM-LOK attachment points at 3/6/9 o'clock and upper 45Adeg quadrants for extensive accessory placementLower 45Adeg quadrant venting to aid cooling and reduce overall weightGeissele proprietary 2.25-inch barrel nut design for a strong receiver interface and consistent alignmentHard-coat anodized black finish for durability in demanding useSpecsBrand: Geissele AutomaticsManufacturer Part Number: 05-1657BUPC: 810081130073Product Type: Free-float handguard / modular railLength: 10.5 inColor: BlackMount Type: M-LOKTop Rail: PicatinnyMaterial: 7000-series aluminumFinish: Type 3 hard coat anodizedWeight: 9.9 ozInner Diameter: 1.35 inOuter Diameter: 2.11 inHeight: 2.3 inCountry of Manufacture: USADisclaimer: We strive to provide accurate and up-to-date product descriptions, specifications, and images; however, errors or omissions may occasionally occur. We are not responsible for any inaccuracies or discrepancies in the content provided. If you notice anything incorrect or unclear, please contact us so we can correct it. When in doubt, we recommend verifying details directly with the product's manufacturer.