Product DescriptionThe Dead Air Shim Kit (DA004) is designed to help you achieve precise timing and alignment when installing an M18x1 muzzle device. The kit includes three different shim thicknesses so you can fine-tune fitment for proper orientation. A thickness/identification graphic is provided on the packaging, and for best results Dead Air recommends placing the thickest shim on the barrel shoulder first.Product Highlights Three shim thickness options help deliver precise muzzle device timing and alignment Designed for M18x1 muzzle device installations Packaging includes a visual guide to shim thicknesses and identifying features Helps support secure, correctly oriented muzzle device mounting Black finish to match common muzzle device aestheticsSpecs Brand: Dead Air Product Type: Muzzle device shim kit Thread Compatibility: M18x1 Color: Black Included: Shims in three different thicknesses Manufacturer Part Number: DA004 UPC: 810128161312Disclaimer: 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.