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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You need to remove the little retaining pin first.
Looking inside the receiver you should be able to see end of the split pin with a little retaining nub on one leg of the pin. Using a punch knock it downwards and out. It needs to be pushed out before the mag release/BHO pin can be removed.