You must be at least 18.
11 to play at fields, 18 to buy a paintball gun.
18
No, you cannot purchase a paintball gun until you are 18.
In New Zealand you have to be 18 to own a gun licence.
18 in the US.
It depends on the laws of your area.
18
18
18 in the United States.
The answer is 18.
Read the instructions on the new part. Most of them require opening up the gun halves and replacing the old part.
11 to play, 18 to buy.