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.
Try posting your question in the appropriate rifle forum and you should find someone to help. If you apply for the Equipment Exchange under group membership in your User CP, you will find interesting items for sale. It may take a couple of days to be approved. Welcome aboard.