A list of McMaster-Carr parts for the AR platform, enjoy!
One nugget of knowledge worth sharing: you can search a mil-spec part number directly in McMaster-Carr. Hadn't tried it before — worked like a champ.
All information posted here is for informational use only. If you make any modifications to your firearms based on this content, you do so at your own risk. Done incorrectly, this can render a weapon unsafe or unusable.
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