I'll be moving to SC in the near future. I know they're Class III friendly, but what do I need to do as far as bring my stuff with me?

File 5320.20s with the BATFE NRA branch. It's required for all interstate moves (technically not required for suppressor, however it is for all other NFA and an NFA attorney of mine suggested it wasn't a bad idea to include suppressors - but technically not required).

Usually takes 2-6 weeks to get them back, if you need it sooner give them a call, believe it or not the NFA branch is the helpful and friendly one at BATFE.

https://www.atf.gov/resource-c...320-20pdf-0/download