Damn I didn't explain anything to you did I?
You can check the status by calling the NFA branch (304) 616-4500. Have your serial number ready. They will ask who it is being transferred to, tell them your Trust name. They will tell the status (they have a bunch of them). I don't know when they cashed your tax stamp but you can ask when you call. From when it's officially approved to when I receive is usually 1-2 weeks.
The approved Form 4 is snail mailed to me from the NFA branch in WV. When I receive it, I will call you to set up an appointment (usually same day). I also scan the approved Form 4 and email you a copy in PDF form (something new I'm doing) so you can put the original away.
You'll need to bring your GA DL and have to complete a 4473 but no background check is needed for NFA items (weird huh?). Let's say you can't come up here because you're binge drinking for the next week, no problem because we can do a non-over the counter transfer. I will mail you a 4473 that you must complete and return. I then have to send a copy of the 4473 and Form 4 to your CLEO to notify them I am mailing you a suppressor. I have to wait 10 tens before I can mail the can to you.