Wanted: Small CO2 Chamber

I'm going to start breeding rats in the next 4 months and am looking for a new or used small CO2 chamber that will work with paintball CO2 canisters. I am not handy at all, so would prefer to buy one from someone instead of building one. I would also prefer if any tubing / valves needed are included. I am planning on gassing a maximum of 5-10 rats at a time, so a small unit would be great. I would need it shipped (and will pay shipping) to zip code 31909. Please PM me here on BP.net if you are interested.