While you are on the site, in your browser find and click "Add to Home Screen" A CGN beaver app icon will then be created to your phone that is directly link to the site.
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Once you break the inner nut loose the outer piece should spin freely. I did find on retorque that timing the outer nut with the proper torque on the barrel nut took a few tries. Once you get the handguard off you will see what you need to do