Here are a few Lapco Piggybacks which I will be listing in the week to come with a few other lapco parts.
These brackets can be used to mount either two bottles as seen in the scan from Paintball Magazine (October 1992) or used to mount a duckbill asa under a T stock. The tanks are typically set up with on off valves so air is not lost.
A look at an early Ogaz Enterprises Autococker machined from a stock WGP body with Shark engraved on the side. Chris Ogaz began machining Autocockers for Spanky around 1998 or 1999 and this was likely one of the early examples.