Check the extractor face, and be sure that one arm is not broken. If the chamber is too deep, the 9mm round can not headspece on the case mouth, as it is designed to do, and the extractor can not move over the case rim into the extractor groove of the cartridge when the breach closes. If the loaded round with a light primer strike is not extracted when you cycle the toggle, then the extractor never got into the groove. The loaded cartridge is too far into the chamber, and the extractor and the firing pin can not reach it to allow normal function. What ammo are you trying to shoot?
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