Harry...I owned a Kahr CW9 that I tried to use for concealed carry. Great gun! While it was small, accurate, and reliable, the trigger just wasn't "me" so I sold mine to buy a S&W 642 Airweight revolver. I like the S&W much better for my personal requirements. I wanted a pistol/revolver for deep concealment. The 642 is all that and more. Mine is a .38 Special that is also rated for .38+P ammo. Whether it's a 9mm or .38+P, I think both will trip the "lights out" switch on a bad guy..... I have to say this for the Kahr line of pistols, they are a GREAT value for the buck. I, personally, would go with the CW9 over the PM9, just for the economics. Use the money you save and buy some ammo and go shoot it. If it suits your personal needs, go for it. If it doesn't work out for you, you can always trade it off for something else..... Just my experience... Dan Thome (Trap2)