Luger grip screws

[Patrick]

Bill, the grip screws are one of the more interesting features of the Luger Parabellum. Loewe in Berlin was one of the first manufacturers who were able to make precision parts that could be interchanged. This was called the â??American Systemâ?� and the Loewe factory (which later became DWM) used machine tools made by Pratt & Whitney, imported from the U.S.A. That is why the grip screws are NOT metric. The grip screws are the only screw attachments on the Luger and they were made so that they could be removed in the field. The head of each grip screw should have the end number of the SN stamped with the smallest (2 mm) stamp but not all were stamped and many have been replaced. The main difference between DWM and Erfurt grip screws is that the only the Erfurt grip screws were stamped with inspection marks. The manufacturers�´tables show that the grip screws were heat treated blue (this is what we call â??annealedâ?�). Patrick