I can't believe that the impact of the ramped nose of the extractor against the rim of the cartridge would be enough to damage either. The extractor is clearly designed so that the rim of the incoming caartridge will slide up underneath it in the normal rechambering process. It is also clearly designed so that it will cam over the rim of a cartridge which is already in the chamber and I know an instructor who believes he must have done this several thousand times with the same G19 in the process of demonstrating misfeeds. His extractor is still the original one. This does not mean that extractors cannot break but I doubt that they break for this reason. English Wanna kill these ads? We can help!