Product DescriptionThe Dead Air Shim Kit is designed to help you achieve precise timing when installing a muzzle device. This kit includes three different shim thicknesses to fine-tune alignment, with identifying details shown on the packaging graphic. For proper installation, always place the thickest shim on the barrel shoulder first.Product Highlights 3/4" muzzle device shim kit built to help achieve accurate muzzle device timing and alignment Includes three different shim thicknesses for more precise indexing during installation Packaging graphic helps identify shim thicknesses and features for easier selection Installation guidance: place the thickest shim on the barrel shoulder first Ideal accessory for consistent muzzle device fitment and setup tuningSpecs Brand: Dead Air Manufacturer Part Number: DA003 UPC: 810128161305 Size: 3/4" (as labeled) Shim thickness options: Three different thicknesses (included)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.