Product DescriptionThe Dead Air DA002 Shim Kit is designed for barrels threaded 5/8-24 to help properly time and align a muzzle device during installation. This kit includes three different shim thicknesses to fine-tune fitment and indexing. A reference graphic on the packaging details the shim thicknesses and identifying features, and installation guidance recommends placing the thickest shim(s) on the barrel first.Product Highlights Made for 5/8-24 threaded barrels to aid muzzle device timing and alignment Includes three shim thickness options for precise indexing and fitment Shim thicknesses included: 0.004", 0.006", and 0.060" Packaging graphic helps identify each shim thickness quickly Recommended install method: start with the thickest shim(s) firstSpecs Brand: Dead Air Manufacturer Part Number: DA002 UPC: 810128160612 Thread Pitch Compatibility: 5/8-24 Shim Thicknesses Included: 0.004", 0.006", 0.060"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.