[Dean]

Thanks for posting the great pictures, Ron. I hope you don't mind if I ask a few more questions regarding them.

In the bottom photo, top shot...
The coloration of the top of the accelerator is interesting. Is that color case hardened? It looks like cast lead or something.

It looks to be a "spring plunger tube" cast into a square shape that fits snugly into the inleting of the stock. Is that the plunger exposed at the front?

I suspect that the lug on the barrel is not just soldered on, but that the lug is actually inserted into a square recess in the barrel and then soldered.

There must have been quite a bit of hand fitting to get the stock to fit nicely.

I notice the Martz custom carbines do not not have the wedge. He must have used some other type of fastening method to attach the forestock to the frame extension. Maybe he incorporates it in the swivel.

I just love the gentle flare at the tip of these carbine stocks