You need to create the antidote too... because some criminal/terrorist will lay hands on that panacea you dreaming about. I "stick to my guns". Remove all guns from civilian population. Only law enforcement should had them. You want to hunt? Do like Tarzan... use a knife. STAND YOUR GROUND WITH YOUR FISTS LIKE ANY BOXER IN THE RING!

There'd be a delay until a significant proportion of existing firearms were obsolete, or more likely deteriorated/confiscated over time, but I think thats a great idea. As long as theres a way to make a reverse modification impossible.

Though I've just re-read the original post. I doubt there would be a practical method of disabling existing firearms remotely

It’s a hammer hitting the back of a bullet, completely mechanical, new guns can and are being developed with advanced hi tech safety features but you can’t remotely disable a standard mechanical gun.

excellent idea

Interesting idea. I do have to say that it would be great to disarm guns in use by terrorists - and I'm including the white guys who are shooting up schools and concerts. But what happens if the bad guys get the technology to wipe out the guns of our police or military. My guess is once it's out there whoever has the deepest pockets will get the technology.