Yhm crush washer 1/2″ for 5.56/6.8spc/9mm ar-15
FEATURES:-Use to install YHM flash hiders, muzzle brakes, or any other device that needs to be oriented to the barrel-NOT TO BE USED ON ANY Q.D. SUPPRESSOR MOUNT
Dimension: 0.25 X 2.10 X 3.60
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