High quality crush washer made of browned spring steel with an inner diameter of 13mm. You will need this crush washer to align muzzle brakes or flash hiders on your STEYER AUG Z sporting rifle correctly.
The STEYR AUG Z is delivered with a special muzzle geometry and a M13x1lh muzzle threading.
This geometry requires a special crush washer in order to align the following muzzle brake:
VAULT556 M13x1lh
VAULT556 SuperSport M13x1lh
MITE556 M13x1lh
BirdCAGEsd M13x1lh
TwistFORKsd M13x1lh
on your STEYR AUG Z sporting rifle.
Please notice that this crush washer is installed alone and not in combination with other crush washers!