That is damn cool.
Look what I found while surfing Ebay..
Actually I would buy it if I was rich, as these tend to be very expensive in nature..
That part that gets me is that it feeds the dummy ammo, from that tiny little mag, and the fire control group works...
That would be way sweet if it fired some kind of mini ammo, or tiny litlle blanks...
Or say... .22LR
The downside is that it would have to have a 16" barrel to be legal (unless you went for the SBR paperwork).
I'd like to go to the "Museun" to see one first before spending 3k
Makes me think of a documentary I saw that mentioned a fully functional 1/3 scale Mosin Nagant that one of the czars had made for his son.