Sorry for not being clearer and the sloppy terminology. My question is much more basic.
In my very limited building experience (all rifles), the barrel tang is held in place by a bolt into the trigger plate. Yet, when looking at pictures of pistols, it sometimes appears that the barrel tang is held in place by a screw, just into the wood. There is no evidence of the bolt coming through the trigger plate.
I could be misinterpreting the photos; there is not always a clear view of the trigger plate. Perhaps it's always a bolt, just finished flush to the trigger plate. Or perhaps the bolt is covered by the front end of the trigger bow.
As I said, this is a real basic question. I want to build a pistol and am just trying to get a better idea of their construction.
Many thanks.
Bill