18
Generally it is 21.
21
The legal age to buy a gun depends on the type of gun it is. For an example, to buy a rifle or shotgun(excluding assault rifles) you must be 18 years of age. To buy a handgun you must be 21.
18 for a shotgun/hunting rifle, and 21 for a handgun.
21 or older.
The age of emancipation is 18 in California.
Legal limit under age of 21 in California
With the approval of your parents, at any age. On your own, 18 for rifle/shotgun, 21 for handgun.
In the U.S. you have to be 21 in most states to get a handgun carry permit.
18 years of age for a rifle or shotgun, same with corresponding bullets. 21 to purchase handguns and handgun ammunition.
The legal age is 18