Product Description The WMD Guns NiB-X Low Profile Gas Block is designed for .750" barrels and built to fit neatly under most free-float handguards. It features a NiB-X coating inside and out to help resist corrosion and reduce fouling for easier cleaning and reliable performance. Includes set screws for secure installation. Product Highlights Low-profile design helps ensure compatibility with many modern handguards .750" inside diameter for common AR-style barrel gas journal sizing NiB-X coated inside and out for improved corrosion resistance and easier maintenance Set-screw attachment for a solid, straightforward installation Ideal upgrade or replacement gas block for AR builds and repairs Specs Brand: WMD Guns Product Type: Low Profile Gas Block Inside Diameter / Gas Journal Size: .750" Finish/Coating: NiB-X (inside and out) Mounting: Set screw (set screws included) UPC: 855899003294 Manufacturer Part Number: 1-NIBXGB 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.