Silencer Shop makes it VERY easy.
Once one determines what suppressor they want through research and whether one is buying a suppressor as an individual or a trust. The steps for Silencer Shop ordering is as such:
1. create account at Silencer Shop and download their app for iPhone or Android
2. Purchase suppressor AND tax stamp on Silencer Shop website. You can also buy from any of Silencer Shop's Powered By Dealers. Those dealers may have different pricing than what the Silencer Shop website shows. They may also have inventory in their store thats not in stock at Silencer Shop.
2. Answer questions in the generated form on their website
3. If buying under a trust, upload trust documents to Silencer Shop, if individual go to step #4 You can also buy a traditional NFA firearm trust through SS, or better, the Single Shot Trust. IMO its a better idea, a separate trust for each NFA firearm, submitted with only one name. After the Form 4 is approved you can add as many members to that trust with no need for them to submit prints/photos/RP questionnaire.
4. On the Silencer Shop app, take passport photo, this will be added to your account.
5. Find a local SOT that has a Silencer Shop kiosk to electronically take fingerprints which get uploaded to Silencer Shop from the kiosk (Silencer Shop website and I believe their app has a search by zip code for one in your area). OR if you don’t want to upload fingerprints electronically through the kiosk you can go to a local sheriff/police department and get a set of fingerprint cards done and mail them to Silencer Shop. If the silencer you bought is being sent to a dealer other than the one with a kiosk, the shop with a kiosk can charge up to $40 per person for scanning your prints. If the Powered By dealer you chose has a kiosk....no fee to scan prints.
6. Wait for BATFE, at which point your tax stamp gets approved the suppressor and tax stamp will be shipped to a local SOT of your choosing (could be the same SOT that had the kiosk) or any other SOT. Well, the silencer will be shipped to the Powered By dealer you chose when you purchased the silencer. He''l have that silencer within a couple of weeks after purchase. The tax stamp (the approved Form 4) will be mailed to your Powered By dealer. If you decide to change FFL/SOT after the F4 is submitted you get to start all over. Never start all over.
7. Go pick up and enjoy.
Once you have your fingerprints in the Silencer Shop database (if provided through the kiosk) for future purchases you only have to update your passport photos and answer the generated questions in the future. You only visit a kiosk once, so you wont have any "generated questions" on subsequent purchases. When the stamp arrives, the Powered By dealer will contact you and you'll fill out the same Form 4473 you do for any gun. No NICS is done by the dealer because ATF did that before they licked your stamp. Sign, date show your drivers license and away you go!