1) Firearms get sold or stolen...a stolen weapon could be used in a crime.
2) It's an infringment on our 2nd Amendment gaurantee
3) "printing" a bore or firing pin does not make a criminal pop up out of the world to be arressted.
4) There may be some question about use of firearm changing the "imprint"---metal changes from use and wear.
Respectfully, I'm still asking.
IMO your only pertinent point is your #2, and the second amendment has long since and way worse been infringed than by what this firing pin print thing would do.
Wouldn't this have a trade off? Say your gun gets stolen. You report it. Later someone is shot, they not only would know that you didn't have anything to do with it, but they now know exactly what to look for.
2) It's an infringment on our 2nd Amendment gaurantee
How so? It would't PREVENT you from buying a gun. It wouldn't even make it more difficult for you to purchase a gun. You could still have your gun. I see no infringement. In fact, it is less intrusive than certain regulations already in place that DO delay or make it more difficult to purchase a gun.
3) "printing" a bore or firing pin does not make a criminal pop up out of the world to be arressted.
Covered up above.
I was heartened to see that even the blithering liberals attacked him and told him how stupid and unconstitutional that would be.
1) Firearms get sold or stolen...a stolen weapon could be used in a crime.
Yes, and then some of our socialist paradise states can then enact laws making the registered owner of the firearm used to perpetrate a crime civilly liable for not Controlling the Weapon or some other such nonsense.
4) There may be some question about use of firearm changing the "imprint"---metal changes from use and wear.
It can also be easily modified to give a different pattern, but anyone with machinist skills. This was driven home to me as a teenager, when a fellow trade school student, built his own 0.22 revolver with only the basic machine tools in his fathers basement. The damn thing worked pretty good too, I can just imagine what someone with 20 years experience as a die maker could produce.