According to the Minnesota it is a crime to purchase an airsoft gun below the age of 18. But however, some of their guidelines do state that you can purchase one airsoft gun only with a written permission form their parents. They even consider it a big crime if you have to sell an airsoft gun to a girl underage. It is also considered a criminal act for any minor under the age of 14 to own an Airsoft gun. This is why the MAA has drawn an age perimeter of 14 and elder for membership. Such a crime is punishable for either a fine of fine in excess of $1000 or even a one year in prison. Well a decision of whether you want to play or not is completely your parents decision.