Generally speaking, that should not be possible, but I am not that familiar with the justice system; I am not a lawyer by training.
I would just like to add one thing. There are lots of different gadgets and chemicals out there. Are we going to register everything? What about propane gas cylinders? Do you know of anything that poses more of a hazard to a family? They can be used in all kinds of ways. At some point, you have to take responsibility for the choices that you make. Firearms licensing is very important.