The Krupp stahl marks are typically high on the tubes near the forend hanger, but could easily be worked off and you can't see them. Krupp & Sauer were very chummy so the probability is high that the tube steel is that of Krupp, which either sent bar-stock or allowed their recipe thru license to be mixed near Liège and supplied to the tube makers there. Then the Liège mechanics would transform the bar-stock to >>rough bored barrels<<, which were shipped everywhere.


Serbus,


Raimey
rse