Product DescriptionThe Noveske N4 Gen 3 Barrel Nut is a replacement and installation component designed for compatibility with select Noveske handguards, including the NSR, NHR, NSR-SD, and NQR platforms. Built for 3rd generation models, this barrel nut features a durable manganese phosphate finish and a reversible design that allows precise timing during installation. It also includes 1 1/16 inch wrench flats for proper fitment with the correct tool. This part does not fit 4th generation handguards.Product Highlights Designed for Noveske NSR, NHR, NSR-SD, and NQR handguards on 3rd generation models Reversible barrel nut design supports precise timing and installation alignment Manganese phosphate finish helps provide corrosion resistance and long-term durability Includes 1 1/16 inch wrench flats for secure installation with the proper wrench Important compatibility note: does not fit Noveske 4th generation handguards Specs Product Type: Barrel Nut Compatibility: NSR, NHR, NSR-SD, and NQR Handguards Generation Compatibility: 3rd Generation N4 Finish: Manganese Phosphate Wrench Flats: 1 1/16 in. Reversible: Yes Weight: 3.1 oz UPC: 840906104071 MPN: 05000363 Brand: Noveske 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.