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 talking about 50mm objectives we generally need high rings. I would have a local dealer try the medium rings first but most likely you will need high.
Depends on the rings too... the Optilocks are really high, you would easily get away with medium rings if you are considering them. What kind of rings are you looking at?