RULES FOR BUYING A GUN ONLINE
1) For non-restricted states, you need be eighteen years or older to buy rifles or shotguns and twenty-one or older to purchase a handgun or firearm classified as an “other,” such as AR-15 lower receivers.
2) Some states, such as New Jersey, Illinois, Connecticut, Massachusetts, and the District of Columbia require a state firearms license. Some states, such as California, Massachusetts, and Maryland have handgun rosters of approved handguns. Most states do not have these restrictions.
3) Some states may have a waiting period between doing your background check and picking up your firearm.