Greetings all. I'm new to air pistol, and just bought a used Walther CP2M I don't even have yet. I've been looking around for CO2 tank and refill sources here in Anaheim, CA. I've just been told by the previous owner of the pistol that the garden variety CO2 tanks for paintball guns will not fit the Walther adapter, and I should look for beverage places. Anyone in my local area who has some advice for me, I'd appreciate it.