ebay: Pressure Barrel - Finishes the fermenting process then stores and dispenses the beer
So it's like a plastic keg, I guess. I tried corn sugar carbonating in a Coors party pig once. Turned out over pressured and foamy. That was my whacked out black licorice candy beer though, so...
But yeah, you could make beer in that. I'd use the "Pressure Barrel" as a secondary. Or use it as a bottling bucket since it has a spigot. At least the first time. Once you get a good brew made, then you can try it as a plastic keg.