I am not fully up on the various trusts, so that was not legal advice, etc...Been there, resubmitted. It sucks, but sounds like you'll get approved in time.
Nope, you would have to resubmit with each party filling out the Responsible Person Questionnaire, photo, and prints.
This is not a requirement for suppressors. Short barreled rifles and other items, yes. Suppressors, no. The ATF might like you to inform them though.
However, you do need to notify the ATF if you move with silencers, in state or out of state. There is some conflicting info out there, but the link talks about it as well. I just did this not that long ago - you can email the forms to the atf vs mailing/faxing.
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