Product DescriptionThe ATI Outdoors Advance Tech AR-15 Castle Nut is a high-quality replacement component designed to help maintain and upgrade your AR-15 platform. Built with durable construction and precise manufacturing, it provides a reliable, secure fit for long-term service you can count on.Product HighlightsPrecision-manufactured AR-15 castle nut for maintenance and upgradesDurable steel construction designed for long-term reliabilityHelps provide a secure fit for the receiver extension/buffer tube assemblyBlack finish to match common AR-15 hardwareIdeal for keeping critical lower-receiver components properly retainedSpecsBrand: ATI OutdoorsProduct: Advance Tech AR-15 Castle NutManufacturer Part Number: A.5.10.1020UPC: 758152900067Material: SteelColor: BlackQuantity: 1Diameter: 0.98 inDisclaimer: 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.