Picked this up last summer:


No markings other than "12" stamped on breech block and backstrap, single shot, chambers a .22LR (but I only fired shorts the one time I had it out IIRC), breech block opens to the left, manual extractor on the right, approximately 7-8" barrel, approximately 12" overall, dovetail front sight, dovetail rear sight with a set screw.

I don't recognize the action and I can't find anything in my DeHaas books. Any ideas?
Here's a shot with the grips someone was trying to make for it:

The grips need final fitting to the frame as well as grip screw estucheons, grip screw and fitting to the individuals hand.
Any ideas?
Thanks!:D