In order for a fear to be irrational, it either has to be unfounded, or based on something false. The fear of guns is based on the fact that guns are machines designed for the soul purpose of killing. Is it irrational to fear death? You may say guns are for protection, but how does it assure that goal? I wonder, do you think it is irrational to fear Islam? You have an irrational fear of not being armed my friend.