Tim; I spelled Wolfgang's surname incorrectly. It is Brauchitsch. Further since the gun is in Virginia I suggest that you take it down to gunsmith Gunter Pfrommer in Rocky Mount, Virginia and ask him to check it out. He should also have numerous German and Austrian contacts that may be helpful to you.

Wolfgang; I apologize for the incorrect spelling of your surname, please forgive me.

Kindest Regards;
Stephen Howell