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1/2"x28 Muzzle Device Jam Nut for .223 5.56 - 5PCS


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Replace Crush washer for accurate and fine Alignment of Muzzle Brake
Fully Re-useable not like crush washer
Works as a Barrel Thread saver also.

3/4 wrench opening
Full CNC Machine thread
Magnesium Phosphate Coating

5pcs Jam Nut