Product DescriptionManufactured to high quality standards and built around a patented design, the LanTac Lamprey Flash Hider is engineered to improve muzzle flash signature reduction compared to typical flash hiders. Its unique four-tine, "toothed" profile is designed to disrupt escaping gas more efficiently to help reduce flash intensity and duration. This model includes a timing shim set and provides 1/2x28 to Plan B thread compatibility, allowing shooters to mount the Plan-B HUB.Product Highlights Patented Lamprey flash hider design for improved flash signature reduction Four-tine "toothed" geometry disrupts gas flow to help reduce flash intensity and duration 1/2x28 thread with Plan B / HUB mounting compatibility Includes timing shim set to aid proper installation and alignment Manufacturer recommends semi-permanent Rocksett thread locker (sold separately)Specs Brand: LanTac USA LLC Product Type: Flash Hider Caliber: 5.56 NATO Thread Pitch: 1/2x28 Mount/Interface: Plan B / HUB compatible (1/2x28 to Plan B thread) Included: Timing shim set Finish/Color: QPQ finish, Black Manufacturer Part Number: LAM-556FH-PBL UPC: 614347661826Disclaimer: 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.