Firearms Training business. If you have past military experience or just have a passion for firearms, teach others how to use theirs. Business Overview Like the saying goes 'guns do not kill people, people kill people,' and this saying clearly indicates why a person who owns a gun should learn how to safely use, store, and maintain the gun. You must be a certified instructor in order to provide clients with firearms training, thus this will be the first step you need to take to...