Originally Posted by Big Jims Son
Ive flown Delta a number of times from the southeast to the midwest and they just ask to check it each time. you cant have the tank because of the compressed air but the marker is fine as long as it is in a box.
Paintball guns just have to be in checked baggage (you don't have to declare them as they are not firearms).
Air tanks CAN be carried carry on, or in checked baggage. However, the regulator must be disconnected from the tank completely because they will look inside the tank.