This can happen sometimes. Don't force the slide forward. Instead, give the slide a good whack back with your palm (from the muzzle end). It should slide back some and you can again pull the trigger and the slide should move forward so you can remove it. I hope this helps.Ok, so I'm new here and I hate that my first post is a problem but I just bought a CM9 to use as my EDC. I fired some rounds through it today and I must say that I love the gun. That being said, I returned home and began to disassemble so that I could clean and lube. I was able to remove the slide stop but when I went to pull the trigger and slide the slide off it will not go. It is forward about an 1/8th of an inch and will not budge. I also cannot get it lined up to put the slide stop back in. Not sure what to do now. Thanks for any help you can provide.