Bipbigbore,
Their office in Pa is:
KRIEGHOFF INTERNATIONAL, INC.
Contact Information
Ph. 610-847-5173
Fax 610-847-8691
Postal address
PO Box 549, Ottsville, PA 18942
Shipping address
7528 Easton Road, Ottsville, PA 18942

500Nitro:
My gun came with 470NE, 9.3x74R and 7x65R barrels. I brought it to Krieghoff to have it stocked left handed. I'm getting a lot of experience with the cocking, decocking safety.
Having no other experience with doubles it seems to be a natural motion to me. I've put a lot of rounds through the gun and it shoulders, points and shoots well. The real test is next weekend on a hunt we have planned.
The other guns became a series of eliminations. I own other Heyms and like them alot, but the Heym double was out of my price range. I didn't want to wait for a Searcy to be built and I couldn't find a used one. I handled the Blaser and wasn't impressed. I never got a chance to handle a Chapuis. I did handle the Merkel but liked the feel of the Kreighoff more.
In retrospect, If I was to do it again. I would have saved up more money, allowed myself more time to acguire the gun and probably have a lefty Heym, multibarrel set with ejectors made up for me.

Hey a guy has to dream.