That depends on WHEN each item was bought and the circumstances under which he is selling. I can tell you this. If you start out playing by their rules and going FFL, etc. for firearms not NFA controlled you're just opening yourself up for attention from goons in this government now committed to taking away your guns. See most recent ATF head XIDEN nominee who admits he wants to BAN any gun that is semi-auto over 22 caliber with a detachable magazine - force them to register or TAKE them. Look it up.I think he means how many would trip someone he is in the business of selling firearms ala non-FFL