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.
My son recently bought a Marlin 39A lever action (made in 1956) and he thinks he wants a peepsight. Is there somewhere in particular I can start looking for one? TC
http://www.skinnersights.com
Or a Lyman side mount if it's not drilled and tapped up top for a skinner. Skinner also has one for the barrel dovetail but something further back on the receiver would be better.
I've got a Williams FP on my Marlin 39M. It's a good sight. I think they run around $70 - $80 and just about any decent gun shop should have them or be able to get them.