Ok. I am sure this thread has been done before but I would like definitive answers for my questions.

I am PCSing in December. I have multiple long guns, (should have) 3 suppressors (by then), and one Short barrel AR.
I know that you need to get permission to travel with an SBR, but what form do you use?
Do you need permission for the suppressors?
How long does the paperwork process take?
ANY information that you can provide will help me greatly.

Form 5320.20
You don't need the form for the suppressor.
I have no idea how long the process takes.

.20 usually only takes a few weeks to come back.

Make sure where you are moving to allows the SBR and cans. ATF will deny the .20  if not.

Keep in mind it is a permanant move of the toys, so no end date on the .20