Product DescriptionUpgrade your AR-15 with the Yankee Hill Machine Co Diamond Series Rifle-Length Forearm, a rugged free-float quad rail handguard built for secure accessory mounting and improved heat management. Its distinctive diamond-shaped heat vents promote airflow while reducing unnecessary weight, and the extended top rail is designed for a clean, gap-free installation. T-marked rail sections help you repeatably place optics and accessories, while the included anti-rotation hardware helps keep the handguard locked in place under hard use. Constructed from 6061-T6 aluminum with a mil-spec hardcoat anodized matte black finish, this forearm is engineered for durability and long-term performance.Product Highlights Diamond-shaped heat vents for airflow and reduced bulk during extended shooting sessions Extended top rail designed for a gap-free, continuous rail feel when installed T-marked Picatinny quad rail for consistent, repeatable accessory placement 6061-T6 aluminum forearm and barrel nut with hardcoat anodized matte black finish Anti-rotation screws and mounting hardware included for secure installation on AR-15 platforms Specs Brand: Yankee Hill Machine Co Manufacturer Part Number: YHM-9635-DX UPC: 816701012613 Platform Fit: AR-15 Gas System Length: Rifle Length Rail Type: Picatinny quad rail (T-marked) Overall Length: 12.58 in (listed as 12.6 in) Forearm/Barrel Nut Material: 6061-T6 aluminum Hardware Material: Steel (jam nut and anti-rotation screws) Finish/Color: Hardcoat anodized matte black Approx. Weight: 15.2 oz In the Box: Forearm tube, barrel nut, jam nut, (2) anti-rotation screws 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 product&&';;s manufacturer.