Unless Norway has some very strange legislation or something, they ought to be able to get the moneyorder right away. I see no reason why it should be any different from here in Sweden?
The moneyorder would take about a week at least before you get it.
Wireing money from his bank to your bank should be no problem, and you would have the money overnight, but watch out for the fees. I once bought some parts for a Colt-revolver from the US, and the fee was something like 30 or 40$ for a 200$ transaction!