actually, when i was trying to sell my rainmaker, i was hoping for a bit too much and turned down a couple of $300 offers, so i didn't think it was farfetched to trade for someones old AEG that they're upgrading from.

anyway, i was thinking more of a simple STBB design made from a block of aluminum. maybe use a .45 mechanical frame from some old semi, and just make a 6mm bolt and hammer. it could be full auto without worrying about chopping. it wouldn't have to be more than a few holes drilled in an aluminum block and a stock spyder spring, with an attached airsoft barrel.