MAN!
I knew I was glad I lived in Texas before learning this, but now even more so!
There is one interesting thing about buying handguns in Texas, and it may be the same in all other states, I don't know...but at least at one gun shop I trade with, the owner told me that if I buy handguns more than once in a 5 day period at the same shop (not buying more than one handgun, necessarily, but buying guns one day and then coming back and buying more guns within a 5 day period) they have to send a form to the local sheriff. He said that some just file the form in the round file, and that others track it. So far, and I have done this several times (buy more than once within a 5 day period from the same shop) I've never had a call or a contact from the sheriff, ATF, or anyone else. (Other than my wife, of course...

)
The other two guns shops and Academy Sports where I regularly deal have never said anything about it. Well, I did notice that Academy Sports had to fill out the form, but they didn't say anything.