Carbon fiber bottles directly from the source.

Customs/UPS messed with me a bit on this since it was not a US DOT certified tank. However, I was not charged a fee. I suspect imports especially airgun parts from China by individuals are getting more scrutiny now after the story broke over a month ago on the Glock auto sears. This was a big black eye for customs and the BATF. The parts were labelled as for airsoft or paintball guns.
 
Definitely learned a few things about the processing of international orders. I will say that Acecare's communication with me thru out the order and delivery process has been prompt and better than I expected. Assuming that the product I get is good (based on member's reviews); the money I saved more than makes up for the hassel of dealing with getting it delivered.