They'll make it one hell of a lot harder to buy and sell, though. All classifieds like we have here, armslist, and other venues including gun shows will dry up, as they'll be shut down, except for dealer/FFL sales only. Hire a few pukes to monitor common sales sites and walk gun show isles trying to trap folks, and their job will be made easier.Even if the rule is passed, it will be unenforceable. The ATF doesn't have sufficient manpower to police private firearm sales. It will need to rely on state and city police forces to enforce the law. The gun friendly states have already stated that they will not commit any state resources to enforce the new rules that have already passed. It isn't likely that any of them will take action to enforce this either.