What happens if you lost or threw yours away?
I guess the BATF will knock down your door, kill your dog, maybe shoot you, kill your dog again, and then confiscate your guns as “evidence” when they don’t find the bump stock.
Surely bump stocks aren’t registered, are they?
These were not tracked as to who bought them. They have no way to know who owns one, unless on-line and local retailers give up purchase information where credit/debit cards were used. Those who paid cash cannot be tracked.
Not likely since bump stocks were easily purchased without any background checks. Just don't get caught using one at a local range or where ever else you might want to eat up ammunition......