This looks like a cap to a hole for a reinforcing rod.



one more pic without the gripcap and recoil pad.

Might be. Might not be. X ray it and find out.

A magnet might tell the story, but then again could be aluminum...Or...since is obviosuly a duplicated stock, there might have been a trap door grip cap on the original.

I haven't been able to find a dup of this stock on the net. it was a Daly Zastava mini. It had white line spacers.

drill the center with a small drill a littke at a time..I think you have a center mark for grip cap..what ever its easy to hide if its metal which I seriously doubt.

Rich, I've seen that on P14's, a UK gunsmith used the plug to cover a stainless steel screw. The reason was unclear.
Is that a modification of the twin bolt double barrel rifle?