Product Description The Strike Industries Multi-Function End Plate (MFEP) and Anti-Rotation Castle Nut (ACN) kit is designed to modernize the AR receiver extension end plate/castle nut system with a more rebuild-friendly approach. Instead of staking/peening the castle nut, this system uses a set screw to help secure the castle nut for repeatable installations as you upgrade or reconfigure your rifle. The reversible end plate provides multiple sling-attachment choices, including an integrated quick detach (QD) socket, a traditional sling loop, and a dedicated loop for hook-style attachments. Finished in Flat Dark Earth, it delivers flexible sling mounting in a compact, purpose-built assembly. Product Highlights Multi-function AR end plate with three integrated sling mounting options: QD socket, traditional loop, and hook-attachment loop Anti-rotation castle nut designed to pair with the included end plate for a more secure receiver extension setup Set-screw retention helps eliminate the need for staking/peening, improving serviceability for rebuilds and upgrades Reversible end plate design supports adaptable sling routing and setup preferences Flat Dark Earth finish to match FDE-themed builds and components Specs Brand: Strike Manufacturer Part Number: ARULMFEP&ACNFDE UPC: 793811764482 Product Type: Multi-Function QD End Plate & Anti-Rotation Castle Nut Kit Compatibility: AR-Platform Color/Finish: Flat Dark Earth (FDE) Included: Anti-Rotation Castle Nut Approx. Package Dimensions: 5.8 in (L) x 4.4 in (W) x 0.5 in (H) Approx. Weight: 0.08 lb 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.