Product DescriptionProtect exposed muzzle threads with the GrovTec Thread Protector, built to help prevent damage, dings, and debris contamination when a muzzle device is not installed. This steel thread protector features a durable black oxide finish for corrosion resistance and a low-reflective appearance. Designed for 1/2-28 muzzle threads with a 0.625" outside diameter, it's a great fit for AR pencil barrel profiles and includes a knurled exterior for easier installation and removal. Made in the USA.Product Highlights Steel thread protector helps safeguard barrel threads when running without a muzzle device 1/2-28 thread pitch for common .22 caliber/AR-15 muzzle threading applications 0.625" outside diameter sized for pencil barrel profiles Black oxide finish provides corrosion resistance and a subdued, low-glare look Knurled exterior improves grip for tool-less on/off handlingSpecs Brand: GrovTec Manufacturer Part Number: GTHM246 UPC: 811071012461 Product Type: Barrel thread protector Thread Pitch: 1/2-28 (RH) Outside Diameter: 0.625 in Material: Steel Finish/Color: Black Oxide / Black Compatibility: Fits AR pencil barrel profiles Country of Manufacture: USADisclaimer: 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.