Dead Air DA004 Muzzle Device Shim Kit M18x1 Black

The Dead Air DA004 Muzzle Device Shim Kit is a precision alignment accessory purpose-built for barrels with M18x1 threading. The kit includes three different shim thicknesses, giving you the most precise timing of your muzzle device so flash hiders, muzzle brakes, and suppressor-mount hardware index exactly where you want them.

Each shim thickness provides a different degree of rotational adjustment, letting you fine-tune orientation of ports, prongs, or KeyMo mounting features without the trial-and-error of timing by feel. The kit ships with printed instructions that walk you through proper shim selection and installation on M18x1 threaded barrels.

Finished in black and packaged in the standard Dead Air part-numbered kit, the DA004 shim set is a small but essential shop companion for anyone mounting timing-sensitive muzzle hardware on M18x1 threaded barrels.