First Post, and an Open Ended Question

[David-NY]

Originally Posted by Edward Tinker

Looking very close you can sometimes tell what manufacturer made it / i.e DWM, Mauser, Kreighoff, while Erfurt and Simson parts are acceptance stamped (not proofed in most cases)

Erfurt. The toggle is marked Erfurt and it matches all other parts except for the barrel and extension. The acceptance stamps are the Erfurt 1908-18 stamps on the FAQ. Now interestingly, there is also an "RC" stamp on the front of the trigger guard, which appears to indicate an Erfurt arsenal rework of some sort. It has a hold-open (which also matches) and a lug.