Did the hero prop ever make an appearance outside the 3rd season? I'm talking about the one with the light-up LED power gauge.
Mr. Nagata,
Actually, there were a few hollow TNG Cobra made post third season. I remember making several of them for Season Seven but the reason for the hollowness escapes me.
It wasn't made for light effects or a force setting indicator. Might of had to do with not being too heavy in a holster..