K guys, I am going to be 19 years old this September, and I want to start competitive pistol shooting, but I don't know if I have to be 21 years old or not in order to compete. I choose 21 obviously because that is the legal age to purchase a handgun (please correct me if I am wrong). Also, do I need to get any licenses or permits in order to buy a pistol? I live in orange county in southern California. Any and all responses will be much appreciated!