This is a largely hypothetical question but I've been curious about the procedure for an American to buy a firearm when abroad. For the sake of argument, let's keep it simple and say it's a bolt-action .22 rifle. Assume that the country involved is fairly permissive, like Switzerland or Norway. Many countries require that a foreigner produce a document from their home country that says they are allowed to buy a firearm. I remember reading an article years ago that mentioned first getting a letter from your state saying you were OK then having the US Dept. of State endorsing the state's letter. Is the procedure for getting the US statement of ability to purchase anything like this? Let's also assume that getting the gun back to the US is a separate problem.