I've never tried interchanging hold-opens, but I'm suspecting that the DWM would interchange with DWM, the Mauser will intchange with Mauser, etc. But for all I know they will ALL interchange.
On this site the go-to guy for parts is the "LugerDoc". Or put an ad below under "Wanted" and I'll bet you'll get responses. Or check good ol' E-bay or Gunbroker.com. They are out there.
dju
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