The attention to detail on the Tinker gun is interesting. Lots of extra work to store the dovetail pieces when they were not being used. Whatever the plan, at the time it was well thought out and took a lot of work. The effort to store the dovetails when not in use required some disassembly , so the conversion to another mechanism was not a field job.

I have a French Lefacheux [sp ?] actioned pinfire stamped J. Murat on the action flats. The engraving is a similar style [somewhat unusual] as the Tinker gun and the Murat has the thimbles for a full length rod, but too small in diameter to be a cleaning rod. My guess it was used to remove stuck cartridges. Bernard stamped barrels.

http://www.bakercollectors.com/