Stainless Steel 3 PCS 1/2-28 Thread Jam Nuts for 223

Stainless Steel 3 PCS 1/2-28 Thread Jam Nuts for 223

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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.

Specification
Material: Stainless Steel
3/4 wrench opening
Full CNC Machine thread
Magnesium Phosphate Coating

OD:0.75INCH
ID:0.47