hi guys not sure if this is the right section mods please move if it isn't.

Anyway im chasing a Retractable Ballistic Chart that mounts to my cope leupold used to make one but seems to of discontinued making them. does anyone else know where I might be able to find one? not really interested in taping one to my stock. have seen some that tape a small one to there flip up scope covers which maybe my only option if I cant find one.