I have a 5 pound CO2 cylinder I'd like to trade. Got it recently from a Praxair, so it doesn't need a hydrostatic test. I don't need it because I already have one. I'd have to ship empty. It cost me about 10 bucks to fill (or trade for a full one).
I'd like to trade for three 4-inch or longer shanks, a false bottom for a sanke, or a couple perlicks. But I'd be open to other offers. Let me know by PM what you have if you're interested. I can send pictures.