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.
When I broke mine, I had to email Mossberg. I ended up with them mailing me 4 springs. I however sold them with my gun when I sold that. I say calling and emailing them is your best bet!