The Dead Air Shim Kit is composed of three different shim thicknesses for the most precise timing of your muzzle device. The graphic on the packaging details the thicknesses and identifying features of the shims included with the kit. Always place the thickest shim on the barrel shoulder first.

• Model: Shim Kit

*Item must be returned in unused condition and in the original manufacturer's packaging (if applicable). If an item arrives non-defective and accurate to its description, this guarantee does not apply and returns will not be organized in those situations. Please confirm compatibility and specifications with us regarding item DEADAIR MUZZLE DEVICE SHIM KIT 3/4 before purchasing if you are unsure.