You miss the fact that 99.9%+ of firearms are never used in a crime nor linked to a crime today. When that is the case, why in the real world do we have to limit what firearms/knives/etc. people are allowed to own?
The answer is “We do not in the real world. We need to focus on the people who misuse those things to commit crimes!”
Remember also that according to the FBI, DoJ and NIH there are 500K instances of firearm related self-defense each year in the United States against humans and animals. Why do you want to turn those people into crime victims or even corpses?
Are you that terrified of being shot, which if you are not living near someone who is involved with the firearm trade or a criminal is very very rare today!
The answer is if you are? Stop going outside of your home, wrap yourself in bubble-wrap, and leave the rest of us alone.