Two points: 1) In most of this country it's entirely legal to own and use a suppressor - so there's plenty out there "in the wild" and few if any are used for

Two points: 1) In most of this country it's entirely legal to own and use a suppressor - so there's plenty out there "in the wild" and few if any are used for crime. 2) These listings are usually predatory BATF Honeypots (designed to catch only the dumbest among us) - but even if they aren't, there's still little if any crime committed with them. So, why even worry?