Not even for me really, my son decided to buy a Spyder Victor while knowing nothing about the gun. He went paintballing once and decided he wants one. It was supposed to come with a co2 tank, but instead came with an air tank and we haven't been able to find anyone nearby who can fill it. He's itching to use the gun already so we went looking for co2 tanks and found 90g JTs at Dicks, then ran to Walmart to get the adapter. After the very first shot, there's no pressure at all. It doesn't seem like any co2 is getting through. Now I'm not sure what to try, and I'm afraid to take off the tank bc its still full. Help!