I sent a letter to the NFA Branch to inform them of my new address and a list of NFA collectbile serial numbers.
They responded back stating since 2013, the NFA Branch was not accepting letters for change of address notification.
You have to use Form 5320.20 now, it only has room for (3) guns, so..... I had to use (4) forms, in duplicate to inform them
of my move.
Darryl