product description:
NcDe AR15 M16 .223 Rifle 1/2 x 28 Thread Steel Crush Washer
Features?
Comes with black phosphate surface treatment for corrosion resistant.
Crush Washers are made from special engineered, heat treated mill-spec steel that has been fine turned balanced between high spring rate and ductility to meet the function requirement of "crushed with high spring tension without cracking".
Fit for 13.5mm Tube Package Include:
1x5 Pieces
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