Did this guy get scared off? I wish I had seen this post earlier. There is hunting in the Netherlands for waterfowl, rabbits and other game birds. I know he expressed interest in turkeys in upper NY state.
He should have been directed to take a "hunter safety course", if not in the Netherlands then in Germany. Then, he can make arrangements to hunt turkeys in NY. I can't imagine that a guide wouldn't have a gun to loan him. All that deal about citizenship and firearms ownership took his question down the wrong road.
The jist of message should have gone something like ..."You want to hunt? Great! No gun? No worries. We'll find one you can borrow for now."