i was looking for a hard baller kit from prime and i found this thing.
http://airsoftglobal.com/product_inf...bfeb807f07de42
pretty expensive, but steel?
i thought there wasn't enough pressure coming out of a Gbb to cycle a steel slide? though i guess customs wouldn't be to happy about letting something like this thought he boarder (and i definitely don't have enough money to pay someone to bring it in) just thought it was interesting.