I stand corrected on this i Did think it was a state of AZ law. That is incorrect it is federal.as for the Age of purchase federal law is 18 for long guns and 21 for pistols
AZ law is 18 for long guns and 18 for pistols. That is why in a private sale in AZ an 18yo can buy a pistol but they can't purchase a pistol from a store.
HATE IT when I am wrong. Happens more than I care to admit