Product DescriptionThe Geissele Super Modular Rail (SMR) MK14 M-LOK handguard is a slim, lightweight free-float rail designed to enhance rigidity and modularity on AR-15 platforms. Precision machined from strong 6061-T6 aluminum and finished with Type 3 hardcoat anodizing, the MK14 features M-LOK attachment points at the 3, 6, and 9 oclock positions for secure mounting of lights, bipods, grips, and other accessories. An updated Geissele barrel nut system with extended surface contact (2.25 in) helps create a straight, true, and rigid mounting interface along the full length of the rail. Barrel nut is included; a Geissele barrel nut wrench is required for installation (sold separately).Product Highlights 13.5-inch free-float Super Modular Rail MK14 design for a slimmer overall profile M-LOK slots at 3, 6, and 9 oclock for highly modular accessory mounting Rigid, updated Geissele barrel nut interface with extended 2.25-inch surface contact Precision-machined 6061-T6 aluminum construction for strength with reduced weight Type 3 hardcoat anodized black finish for durable wear and corrosion resistance Specs Brand: Geissele Automatics Model: Super Modular Rail (SMR) MK14 Type: Free-float handguard / rail Length: 13.5 in Mounting Interface: M-LOK (3, 6, 9 oclock) Material: 6061-T6 aluminum Finish: Type 3 hardcoat anodized (Black) Height: 2.02 in Inner Diameter: 1.27 in Outer Diameter: 1.52 in Weight (with hardware): 11.5 oz Includes: Barrel nut (barrel nut wrench sold separately) UPC: 817953022535 Manufacturer Part Number: 05-573B Country of Origin: USA Disclaimer: 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 products manufacturer.