Black Dawns new muzzle brake.
Instructions: Included will be several shims which will help you time the brake. Please align the brake with the proper amount of shims where the brake is less than ¼ turn. Use a 3/8 inch wrench to torque the middle bottom port slot. Nitride is a durable coating but with enough torque could damage brake. If the amount of shims will not allow for a proper timing please contact us. The brake comes with a lifetime warranty, again thank you and enjoy.