Without the pictures and working from memory (memory is good, although short) the action is very similar to both the Remington Improved Model 6 and the 14 1/2 Little Scout, but it is neither. Both those actions had stamped trigger guards, the OP's rifle has an integral guard, for starters, and the lines of the receiver in question would tend to indicate that it was designed to look graceful with a pistol grip stock. BTW, the Little Scout had a thin receiver and an offset bore at the breech.
The predecessor to the Improved #6 was named simply the Model 6, and had a laminated receiver, again quite thin, but with the triggerguard integral to the center lamination.
On the OP's rifle, the presence of those screws on the left side calls up the question as to whether this is a laminated build. I couldn't tell from the pics, maybe Willy TC can remember. If it is laminated, it is done very well.
The internals might give some clues, as would the extractor and takedown lug setup.
This is a fascinating and dare I add, charming, little rifle, and shows intriguing possibilities for the home builder but I could buy into the prototype theory. Whoever designed it had a real eye for attractive lines and the build itself has a very professional look.
I'll add my voice to the clamor for pic re post.