He'll buy the rifle and get you the serial if it needs to be registred before shipping.
He'll do customs papers and ship it any way you desire.
For instance the Danish postal service (like a bull services a cow!) wont touch anything remotely gun related (not even pellets!) and he shipped FedEx as per my request.
He put me up with a .50 Texan when they came and im getting a Zeus now.
My problem is as stated that the Danish postal service wont touch anything gun related and when a parcel is shipped with the USPS it ends up in the Danish postal system. Thats when things get nicked and you might end up with a police charge.
So do use FedEx or UPS they will ship anything and they are not involved with customs, they just declare it and you pay later.