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Home > Parts > Barrels > Armory Dynamics 5.56 Crush Washer

Armory Dynamics 5.56 Crush Washer

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Part Number:AD-UP1003201

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6 - 10
$0.98
11+
$0.97

Description
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Crush washer for 5.56 AR-15 / M16 / M4 / AR-9's with 1/2 x 28 thread or 1/2 x 36 Thread.

1/2 Inch
Black Oxide coating*
Mil-Spec Dimensions
Made in USA
Made with US Steel

The black oxide coating is produced by a chemical reaction between the iron on the surface of the ferrous metal and the oxidizing salts present in the black oxide solution. These oxidizing salts include penetrates, catalysts, activators and proprietary additives which all take part in the chemical reaction that bond with the metal.