Yes it could. Although if they only took the few I registered, they'd be "taking" only a fraction of my firearms. And since some argument might be made that the AR lower is the SBR, leaving me the uppers would accomplish nothing in particular. The darker side is the argument that they use the database to identify gun owners and then take all the weapons you have, SBR or not. Paranoia aside, that's pretty unlikely in our current world. And before you throw Canada or Australia in my face, it remains true that the US and it's gun owners are NOT Australia or Canada. And I have a suppressor registered previously so I'm on "the list", whatever that is, anyway. Registering my braced pistols was a risk I thought worthwhile...to be able to remove braces on some and put on real stocks. And then others, like the 10/22 Charger pistol, I just wanted anything stock-like on. Yeah, I know, a 10/22 braced Charger is just a Ruger 10/22 with a short stock
But its a heck of a lot of fun. And with a folding brace, it's pretty short.
I agree, the state line thing is a pain, mcb, although I didn't think my suppressor could cross either. But, again, there are other firearms at home that can cross state lines. I just can't take all the toys across at once.
As far as the pictures, they didn't get any evidence at all. From me, they got pictures of the markings, not the whole firearms, and while the forms were submitted, the firearms were in legal form with braces removed. Just in case somebody came out to check. That's as far as my paranoia goes for now. Like everyone else, I'd just like to stay on the legal side of things.