Let me start off by saying that I own a CM9 and love it, which is why I decided to purchase a brand new CW9 on a whim today.
First things first, when I got home I attempted to field strip my new CW9 for a quick wipe down and oil. It was impossible to do by hand. I had to use a pop bottle so I could push the gun down with both hands to depress the pin enough to thread a zip tie through the other side and make a loop to pull the pin the rest of the way out.
Next to my surprise the inside of the slide looks and feels like sand paper.
And the worst for last. THE TRIGGER IS TERRIBLE! Nothing like my smooth clean CM9 trigger. It's squeeky and spongy.