Safety & Age Restrictions BB guns use air and spring power and are intended for general target practice. They use 6mm plastic bb bullets and are totally harmless providing Safety Information is observed. You must be at least 18 years old to purchase a BB gun.All orders are only accepted on the condition customers have read our Terms and Conditions before purchasing. The Law Minimum age to purchase a BB gun is 18 years. An adult must supervise persons 14 to 18 years of age.No gun should be carried in a public place unless in transit when it should be unloaded and placed in a bag. Guns must not be concealed on one's person, or pointed or fired at another human or animal.ll orders are only accepted on the condition customers have read our Terms and Conditions before purchasing. The Law Minimum age to purchase a BB gun is 18 years. An adult must supervise persons 14 to 18 years of age.