Board Thread:Speculation House/@comment-10317392-20140418091151/@comment-3387274-20141126133152

I'm guessing the flames are from a dust crystal in the center of the weapon. The muzzle either opens on the crystal or the flask proper depending on what mode it's in. That way you don't necessarily have fuel residue to contend with, and furthermore the crystal could be being used to keep the cofee hot, rather than a vaccume. In short it seems to me that both functions actually make more sense if it's set up that way.