NPS DOPE Card Holder
This is a pic rail mounting dope card holder that is designed to work with the reusable NPS Dope Cards. It is a two piece holder that is held together by magnets. The piece that goes on the rail is meant to stay put, while the piece that you velcro the card to breaks away when needed. There is also room to add a stop watch.
The card holder comes in various colors and a carbon fiber option as well!