As an owner of Merkels, I've used Merkel GSI (now called Styer Arms) to service one of my guns. The gunsmith's name is Herbert and he has been very helpful to me. I understand your concern with shippng your gun, but there's nothing like going to the source I feel. Since it's something like a firing pin, I wouldn't hesitate to use a local trusted gunsmith.
Hope this helps,
Karl

Last edited by Karl Graebner; 04/03/17 09:20 AM.