18.
You have to be 18 to buy a long gun and 21 to buy a hand gun.
A good start is to visit a gun dealer. You will need to have proof that you reside in Louisiana, are at least 21 yrs old, and will need 2 forms of ID. The dealer will have you complete a Form 4473 that asks you about things that would prevent you from being able to buy a gun, and conduct a background check with the FBI.
Louisiana doesn't have gun registration to begin with.
In the US, 21 years old.
You problably can, just make sure you have a permit and are legal of age.
18
Yes
11 to play at fields, 18 to buy a paintball gun.
There is no set age limit for cap gun ownership.
18 for a long gun, 21 for a handgun.
A 12 year old can't "own" a gun, since you have to be 18 to buy a rifle and 21 to buy a handgun.