Check the listing for details. Strike Industrie Barrel comp Timing Alignment Shims Clock Kit 1/2x28 22 bore SS. Condition: New. Listed at 10.95 USD. AUTHENTIC Strike IndustriesBarrel Shim SetFor Clocking Comps/Brakes BEWARE OF FAKESThere are a lot of new ads for counterfeit versions that do not work and break. For 1/2x28 with a 22 bore The Strike Industries assists in timing and alignment of your muzzle devices for a piece of mind dependable installation. Crush washers are usually a one-time use washer designed to deform and do not guarantee alignment. Shim washers are flat, consistent and should be used whenever bore alignment is critical in applications to ensure your muzzle device ports are correctly positioned. Great for comps like the cookie cutter.Package Contents:-x4 0.075mm/0.0029 inch shim-x3 0.22mm/0.0086 inch shim-x3 0.11mm/0.0043 inch shim-x2 0.34mm/0.0138 inch shim-x1 2.0mm/0.0787 inch shim Features: -Assists in timing-Ensure alignment-Properly position ports-Reusable-Made of SUS 304 Stainless steel FREE US SHIPPING FREE TACDOM 2nd Amend StickerUpgrade to Priority for only $6.95 Note Cross Armory no longer engraves their magazine release. We recommend you do your own research to know if this will fit your application and other aftermarket items you installed. Colors are proprietary to this manufacturer. They may be close to other brands, but there is never a color match guarantee. Due to buyers unknown skill level we require all parts to be installed by a licensed Armor. Please have your armor contact the manufacture of additional install details and compatibility. Most parts can require some fitment due to unknown tolerances that you posses. No refunds for self installs.