Are you subject to yearly BATF inspections for "owning a can" like you are for owning an auto? Or is it just pay the $200 to get checked out and you're good 2 go?
More internet lore about suppressors and NFA stuff - there is NO "yearly" inspection or forfeiture of rights to own anything NFA. Do the paperwork, get your stamped and approved form 4 and you are done. Some states require a MG register but that is no big deal either.