chapman, finally I find out that the Dreyse Patent action like the Mauser 71 have an extractor but no ejector. is this the case with your rimfire rifle too?

I was wonder before what this is for a part on the right side of the reciever here.

have showing the rifle above, its the only patent rifle till now with this unknown part. maybe some kind of ejector made later and this would also explain the R/crown proof after 1912.