Well, it starts with enforcing law. When you say loud and clear to somebody if you're going to carry a gun illegally, we're going to arrest you. If you're going to sell a gun illegally, you need to be arrested. If you commit a crime with a gun, there needs to be absolute certainty in the law.
You will be arrested when you carry a gun legally
( z1 arrest :ARG1 ( z2 you ) :time ( z3 carry :ARG0 z2 :ARG1 ( z4 gun ) :ARG1-of ( z5 legal ) ) )