Federal Law
Most federal laws regulating firearms are included in Title 18 of the U.S. Code -- the Gun Control Act (GCA, 1968) as amended by various subsequent laws, including the Firearms Owners` Protection Act (1986), the Youth Handgun Safety Act (1994), the Gun-Free School Zones Act (1996) and other laws. Details on federal firearm laws are available from the Bureau of Alcohol, Tobacco and Firearms. (
www.atf.treas.gov)
"A person under age 18 may not possess a handgun or handgun ammunition, and it is illegal for a person to provide a handgun or handgun ammunition to a person under age 18, except for target shooting, hunting, or certain other exempted purposes. (Youth Handgun Safety Act, 1994)"
There is no state law on possession therefore once you are "18" you satisfy the federal law...go get your license.
Side note you will not be able to purchase a handgun from an FFL (aka: Firearms Dealer until 21) however you can purchase privately at age 18.