A while back my ffl who has since required mentioned that he had to inform local police if someone purchased a certain amount of handguns in a 2 week period. Not for inspection or anything, just let them know in the event that there was new handgun related crime or something like that. But no such restriction on long guns.

I can't remember if he said more than 2 handguns(3+), or 2 or more handguns(2+). Is there any basis to this? If so, which is it?

Asking for a friend.