Any individual can legally manufacture their own suppressor (in states where this is allowed/permitted) by submitting nothing more than an ATF Form 1 and the $200 registration fee. A Type 07 FFL with Class 2 Special Operational Taxholder (SOT) status isn't a requirement for manufacturing one single suppressor for personal use.
This wouldn't mean that you could fabricate a whole bunch of suppressor bodies and internal components to experiment with, but people do submit Form 1s all the time to turn an old Maglite flashlight body into a homemade suppressor, for instance.
>This wouldn’t mean that you could fabricate a whole bunch of suppressor bodies and internal components to experiment with,
How about one body with a bunch of internal components to experiment with?