if you call and they say it was approved, they will give you the approval date and it is generally mailed that day or the next to your LGS you got it from. the LGS will call you to tell you they have it. Immediately make a bunch of copies and put the original away with your other important paperwork. always keep a copy of the stamp pw with you when you use the can....law. you can shrink down the pw front and back on a copy machine and make a readable card sized copy you can keep in your wallet. i have one section in mine that has 5 shrunk down stamps!!! then i keep a copy of all of them in my truck, and a copy in one of the grips of my AR's. no place to store when using a pistola hence the wallet and truck.
have never been asked to produce it when stopped by the game warden or the cops when i was speeding once. they just actually wanted to check out it's coolness factor! didn't get a ticket!
but your gun store you got it from will call you to come pick everything up, then you have to fill out the 4473 to 'register' your already 'registered' can....which is really dumb. then you take it home.
if you put it in a trust, make sure to add it to your schedule A, assignment of property. it can be handwritten or typed, don't matter.
i keep a copy of the trust in my truck also as it has all my NFA stuff on it also.
if you get another can, use the same trust and the schedule A that has all your other NFA on it as they want the entire trust now, not just the certification.
I have 2 more in line as of the other day. both Hunterstown.
hope that helped. you will definitely get some wood when you get that phone call! last one, i was in the LGS and got the call from the LGS in the same LGS! i just looked up into the balcony and there was my bud calling me! didn't know i was in there, looked down, waved, was OTD in about 20 mins.