Optimize your firearm's performance with the Dead Air Armament Muzzle Device Shim Kit specifically designed for barrels with 1/2x28 threads. This versatile kit includes three distinct shim thicknesses allowing for precise alignment and customization. The detailed packaging graphic provides easy identification of each shim's thickness ensuring you select the right fit for your needs. For optimal results start with the thickest shims during installation. Enhance your shooting experience with this essential accessory.