No, but it would require running a background check. So lets actually READ the law then. And rather than just say 'go read the law' I will SHOW you the parts that you may have missed in your reading. "(t)(1) Beginning on the date that is 180 days after the date of enactment of this subsection and except as provided in paragraph (2), it shall be unlawful for any person other than a licensed dealer, licensed manufacturer, or licensed importer to complete the transfer of a firearm to any other person who is not licensed under this chapter, if such transfer occurs- "(A) at a gun show or event, on the curtilage thereof; or "(B) pursuant to an advertisement, posting, display or other listing on the Internet or in a publication by the transferor of his intent to transfer, or the transferee of his intent to acquire, the firearm. The kicker is, it need not be a direct 'For sale' advertisement. If I post a picture of my gun (display) and you see it then make an offer to buy it even though I never mentioned selling now UBC is needed If I post that I need to sell some of my guns and can't decide which ones to part with, and you have seen a previous list of my guns online (either related to 'which one should I sell' or simply a list of gun I have) and IM me with an offer for a specific gun...now a UBC is needed. I am not even sure what 'other listing' is. What about those guys who list their collection on their signature line...is that going to count? What about if I post that I am selling a gun on facebook, is everyone on my friends list now needing a UBC if they buy, because maybe they saw the facebook post?