+1 to Gerhard. If you don't think that somehow gun purchases are being tracked, then good for you. Don't mean to be rude, but big brother is tracking everything, whether it is legal or not is another matter. Do I know how, no, but do I believe they are, yes. Do I have tinfoil on my head, no. I just firmly believe that somehow, the govt. knows what they want to know, not what they are allowed to know. Am I worried, no, I follow the rules and laws of the land and my state so I don't really care that I am tracked.
I bought two handguns this past summer at one time and the guy at Cabela's said, "don't be surprised if you get a call from Homeland or some other Dept. out of Washington. Buying two handguns at once will put you on a list." I didn't get a call from anyone and I don't know if I am on a list somewhere or not. Time will tell. Maybe two at a time will "flag" the purchase and then they do follow up calls and what not.