Well that was informative.I don't think I was "suckered" into registering those suppressors,how was I supposed to purchase them anyway?
The legal issue isn't whether you were suckered or not.
It's about knowing what your rights are.
Unless they have and show you a warrant, they can pound sand.
They are not your friends, and they aren't there to do you any favors. You complied with the law. If they think otherwise they can show a judge probable cause and get a warrant. Otherwise they are just fishing.