Can you please expand on what you mean by being built in house? Are you saying they are building the Kahles scope in the USA?
I think the Kahles scopes are nice. However, having two guys handle the service and having to send them to Europe is not my idea of a good plan. They may be great guys and bend over backwards for you, but how do you know how long they are going to be around? Do they have a succession plan if something happens? I would prefer a company to back my scope up not a person.
And there you have it.
http://www.snipershide.com/shooting/snipers-hide-rifle-scopes/257869-khaybes-kahles-info.html