Product Description The Geissele Super Modular Rail (SMR) MK14 M-LOK handguard is a slim, rigid free-float rail built for serious AR-15 setups where strength, alignment, and accessory modularity matter. Precision machined from 6061-T6 aluminum, the MK14 features M-LOK slots at the 3, 6, and 9 oclock positions for secure mounting of lights, bipods, and other accessories. It includes Geisseles updated barrel nut design with long surface contact (2.25") for excellent receiver interface and a rail that stays straight and true along its full length. Finished in durable Type 3 hardcoat anodizing, this 9.3" rail delivers a lightweight, ergonomic profile without sacrificing performance. Product Highlights Super Modular Rail MK14 design with a smaller diameter/overall height for a slimmer, more ergonomic handguard profile M-LOK attachment slots at 3, 6, and 9 oclock for highly modular accessory mounting Updated Geissele barrel nut system (2.25" contact length) improves rigidity and helps maintain alignment Precision machined 6061-T6 aluminum construction for a strong, rigid, lightweight free-float rail Type 3 hardcoat anodized black finish for long-lasting durability Specs Brand: Geissele Automatics Product Type: Free-float handguard / rail Model: Super Modular Rail (SMR) MK14 Compatible Platform: AR-15 Attachment System: M-LOK (3, 6, and 9 oclock) Length: 9.3 in Height: 2.02 in Inner Diameter: 1.27 in Outer Diameter: 1.52 in Material: 6061-T6 aluminum Finish: Type 3 hardcoat anodized (Black) Weight (with hardware): 9.6 oz Included: Barrel nut (barrel nut wrench sold separately) UPC: 817953022511 Manufacturer Part Number: 05-578B 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.