Thanks very much for the info on the bead blasting and butt plate. The fact bead blasting would prepare the re-parkering with any damage to the surface is encouraging if i finally decide to re- finish it.

The decision of modifying from an original Riot to Trench has had me question whether it would be proper also, and does give me pause for consideration. The reason I considered the mod was the sloppy finish and lack of confirmation of an original stock. The butt plate does have the widows peak you mention and the top end of the stock is cut out to fit it. However I removed the stock and found whoever drilled the stock missed the top hole and scabbed a small, really sloppy repair.
If the "W" adapter indicated isn't correct for the later Trench guns do you know when it was used? Also to clarify the barrel underside doesn't have the three grooves cut for the adapter. The serial No. indicates post war manufacture of 1948 or '49 depending on the source.

I'll add a couple photos later tomorrow.



Cheers