I think we have here a very good tutorial on what happens when you shoot a Luger with excessively hot ammunition.
Note the wear on the rear portion of the toggle knobs in the last photo. It would be useful for good, close, well-exposed photos of this area and the frame ramps to determine if this is use wear or if someone actually filed these areas.
It would also be useful to see a picture of the back of the frame, outside, where the toggle tail slams against it.
--Dwight
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