If you would teach your children how to use guns, you must teach more. Guns can be good and guns can be bad. What you teach about guns is more important than just teaching how to use them.
Guns come with dangers, so they should come with warnings. Guns can kill the soul of the person shooting them as quickly as they kill the person who is shot. So, pass them out only with precaution. Tell those who would use them not only when to use them, but when not to.
We may suppose we strengthen our society by giving it guns. To the contrary, we will only weaken it if the guns come without instructions on the sanctity of life. Guns should not be placed in the hands of anyone who is not first taught to reverence the lives of those they can be aimed at.