Will this work for gun regulation (see details)

If I say “Automobiles don’t kill people, people (using automobiles) kill people,” most people would not disagree with a system of registration, licensing and insurance in order to ensure that people who operate automobiles would be properly trained and held responsible for the safe operation of automobiles.

However, if I say “Firearms don’t kill people, people (using firearms) kill people,” and I propose a system of registration, licensing and insurance in order to ensure that people who own and operate firearms would be properly trained and held responsible for the safe operation of said firearms.

What is the difference?