You show your tax stamp to range safety dudes? Lmfao
If an old Boomer RSO approached me asking to see my tax stamp when I’m shooting my suppressed gun, I would tell them to fuck off because they aren’t an authority to enforce the law; they’re not the ATF, they’re not the FBI, otherwise I could ask to see their social security card. Because they are simply gun safety babysitters, and regular fucking dudes with no real authority other than being allowed by the business owner to ask you to leave.
Me having a tax stamp is literally none of their fucking business.
I have a large enough property that I haven’t shot at a privately owned range in decades, so having a rando come and ask me for my personal tax documents is kinda weird.