I know there was some heat bought onto it for being carried unloaded. You would have to remove the battery to keep a charge in it and be legal when transporting it.
Like I mentioned it was something that caught my eye while reading as I haven't heard or seen anything about it in 2 yrs. I just figured it had faded out from not being accepted in the ML world.
(I can't say anything bad about fiber optics, got a small piece I inserted into my hawkens front sight to help me in low light situations) I hate getting old sometimes.