Hello all,

I picked up this single shot pistol from gunbroker. Its mechanically sound luckily. The internals are in ok shape, albiet a little rusty. I did a quick wax cast of the chamber (after a fruitless google of the gauge marks).
While taking it apart I noticed it had two magled screws that had been ground flush with the backstrap. I take it this is for some stock mount?
[Linked Image from i.imgur.com]
[Linked Image from i.imgur.com]
[Linked Image from i.imgur.com]