Revolutionary War German gunsmiths?

[Mr. 16 gauge]

GOB;
I don't think that there was a particular part of 'Germany' that the gun makers came from.....rather, I think that the gunsmiths were probably from several of the different German 'states' at the time (remember, there wasn't a unified "Germany", as we know it, until the late 19th century.....prior to that that, they were just a collection of german speaking states/nations that were unified by a common language.
For instance, my dad's side of the family came from the Euchermarch (if I spelled that correctly) region of Pomerania, which was in Prussia. Others may have come from Holstien, Hessia, Fresia, ect. But all considered themselves "German".
Anyway, I know most of them settled on the Pennsylvania frontier......maybe doing a database search on early Pennsylvania settlers and settlements might give you some more insight......or maybe Gil or Adam might have some more knowledge, since both of them live in PA.
Good luck in your quest.