Years ago the company I used to work for bought I think 4 or 5 of the Clark TCV16’s from Westcoast. We tore them down to the grout and shipped the parts to Louisiana. Fun job since we were only after cores. Kinda gratifying to take the sawzall to tubing or piping that was in the way.
That's not exactly correct. Collectors can be possibly checked but I've never heard of it being done. Even then they need to make an appointment.
https://cssa-cila.org/do-the-police-need-a-warrant-to-search-for-my-firearms/