Originally Posted by Falcon16
My only exception to that would be a 13/3K which since it's a speciality size I'd hang on to cause who knows if in 5 or 10 years smaller tanks like that will even be produced.
I'm sure those tanks are actually made outside paintball. Worst case is that you would end up having to make a "bulk order". Thats what the rep from Catalina Cylinders told me about 3.5oz tanks.
I do have a few annodized co2 tanks from the early 90s that I've retested. Some have been retested 4 times already! You simply can not buy annodized tanks anymore, and while technically you could have a new tank done, you are supposed to rehydro after an anno, so its a moot point.