Side note-ish, but still related, would all law enforcement officers recognize all availability F items on sight? Let's say it's something less obvious than a machine gun, say, an HK XM30, which is basically an assault rifle with multiple configurations; if it's a throwback (so it doesn't have wireless for syncing back to a database for identification), would a random officer recognize it as an illegal weapon, given some assault rifles are legal? What if it was disassembled and stashed as parts amongst piles of scrap?
I mean, you can't get a license for it, since it's forbidden, but would the average officer know the difference between it and a legal assault rifle on sight? Would the officer be able to identify it while dismantled?