I bought a used CM9 slide and could not get the back plate off to clean the firing pin channel. I could not get the rod in the small extractor hole to push down to remove the back plate. I assumed the extractor hole was clogged with dirt so I soaked the whole slide in mineral spirits over night. Still could not get the pin to depress to remove the back plate. I then pushed the front extractor pin back into the hole and removed the extractor. I then removed the front extractor pin but the spring would not come out. I finally shot penetrating oil into the hole tapped the slide on a block of wood and he spring came out. The rear plate came out but there was no rear extractor pin in the hole. I assumed someone removed it and never replaced it. When I had my small punch in the hole, it was going into the spring and not depressing it. I am going to have to buy the new rear extractor pin.