I have sold and traded firearms for over 40years now. My first thought and bet would be it's a minor trying to buy a gun without permission. I would back off of the sale and go elsewhere, These chat lines and forums have created another criminal and minor problem in purchaseing a firearm. My suggestion as I do, is go through a local FFL dealer to do the trasfer and then you are covered. This goes for all that read this post. Always go through a local ffl holder to save you grief and and problems down the road. That extra $20 or so transfer fee is piece of mind in my book!!
Mike