Name a few other devices that are named based solely by their function.
^ Nailed it.It doesnt matter what it does. Silencer is a name not a function. You could take one, weld up the end and fill it with concrete . It would still be a silencer. The inventor named the device he invented a silencer and they were marketed and sold as Silencers for 70 years before some hack Soldier Of Fortune writer decided they could sell more of them to government agencies if they changed the name to Suppressor because Silencers were portrayed as evil in the movies and government procurement officers wouldnt put their name on an invoice if it said "Silencer".
Under what jurisdiction? Are LEO's automatically trained in ATF rules and regs? No.Ranges can and will ask to see paperwork for NFA items. You dont have to show them anything and they can demand you leave the premises. Local LEO's can ask to see paperwork and if you do not comply they can hold you and your firearm until an ATF agent appears.
Under what jurisdiction? Are LEO's automatically trained in ATF rules and regs? No.