Hello Dwight,
For inclusion in your survey, I have had 2mm chips develop on both sides of an 1911 Erfurt's breechblock, where the extractor's hook, fits/lays in the breechblock. I have also found a firing pin spring guide had broken at the base of the guide post, on a 1906 DWM American Eagle. In addition I have had an ejector break at the range on the same Erfurt noted above.
Joe
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