ThunderBeast 338BA Muzzle Brake 3/4-24
The 30BA and 338BA brakes must be timed using the included peel washer. The ojective is to mount the brake so that the narrower "flat" is on the top and the engraving on the front of the brake is right side up.
The included peel washer has layers that are 0.002" thick. These layers can be removed one by one to set the correct washer thickness by heating up one side of the washer with a lighter or kitchen match, and using a razor blade to peel back the layer. Be care to not burn your fingers.
Remove layers from the peel washer until the brake screws on using hand pressure to within 1/16th of a turn (22 degrees). Remove brake and apply thread locking compound (Red Loctite or equivalent) to the muzzle threads. Thread the brake back on and use an adjustable wrench on the flats to torque the brake into final position.
