in most states a minor ..someone under the age of 18 can not enter into a legal contract to buy anything...like said before...do not sell to a minor...an adult over the age 18 yes...
It's not "illegal" to sell to a minor, it's an unenforcable contract that the minor has COMPLETE control over. Doesn't matter if it's notorized, transferred to the minors name, nothing... the minor can void the contract at ANY time, something that the adult seller can not! It's a one way street.