May I suggest that anyone, including the OP, who owns a genuine stock iron, take it to a local hardware store and use their ability to determine the actual thread specification for the stock iron screws by trying samples of screws in the threaded portion?
This would be good information to know. Unfortunately, my Luger Blueprint CD does not include prints and specs on the stocks...
IF anyone has a genuine blueprint for the stock and associated parts, Please PM me, I would love to be able to include it in the Blueprint CD.
2nd question... does anyone who owns both a genuine stock, and a reproduction stock know if the repro screws will fit a genuine stock?