That's really interesting info, Tom. When picking up my first Form 4 I was totally shocked that they wanted me to fill out a 4473 after waiting six months. But the dealer was pretty adamant that it had to be done.
There was no real reason for me to complain since I steer clear of criminal activities, and I haven't even questioned it with forms received since. But.. I've got a F4 that *should* be arriving in the next few days- maybe I'll ask the question again.