Ok i flew about two weeks ago to florida with my gun and two compressed air tanks. I flew from oakland to miami and then from miami to chicago where i was for a few days then from ohare to oakland. I had no problems with carrying my gear and i decalred it at every airport. What i would do if i were you is put the tank in one bag and the gun in another. They do not care about the paintball gun but they do care about the tank. They like you to let them know that you have one and it is empty. Also tell them that it is in seperate bag from your marker and this should ease them a little. Also if they give you a hassle about it then ask them to call their supervisor about carrying empty commpressed air tanks. It really isnt a big deal.
Comment