Moreover, Emerson filled out and signed BATF Form 4473 when, on October 10, 1997, he purchased the Beretta semi-automatic pistol referred to in Count 1. This afforded notice to Emerson that so long as he was under a court order such as that of September 14, 1998, federal law prohibited his continued possession of that weapon.
This is where Emerson conclusively bit it. Also Footnote #7