The Gun Issue in a Few Sentences

Do you have a right to life? Yes. If you have a right to life, do you have a right to defend your life? Yes. If you have a right to defend your life, do you have the right to acquire the means to self-defense? Yes. Do you understand that this implies that the citizen has a right to keep and bear arms? Yes.

Very good. All the rest is commentary. 

I go into detail here.