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.
Note: This feature may not be available in some browsers.
He doesn't mention it but it is notable in the construction as the height of Diemaco rear rail doesn't require an F marked FSP installed like American M16's and M4's to line up for iron sights. This means that Diemaco didn't have to change the FSP between C7 and later models.