Jmstr,
I'm starting to grow fond of my K9, which is really something for me - I *was* a devout, single action, cocked and locked kind of guy. I even owned a Glock 17 for a very brief period, and sold it shortly after I acquired it, because I just couldn't stomach the feel of the pistol and especially it's trigger action. That's not to say I wasn't open to the double actions, I've got several S&W revolvers, I force myself to shoot my Chief's Special DAO, and I even shoot my PPC/Steel Challenge race gun DAO for speed. But that comes with the revolver territory, and S&W double action is not too hard to get used to. But when it came time for me to find a concealable handgun, I went all out and had a Caspian Officer's ACP built, and it was/is my mainstay ever since. Fast forward a few years, and here's this cute little police trade-in Kahr K9, with worn blueing, and a Bianchi 3S holster, for just a smidge over $250, including transfer fees. I ask to look at it, and it fit my hand wonderfully! I think to myself about those days when even an Officer's ACP is too big and heavy to pack, the Chief's Special has only 5 rounds of .38, and basically justify to myself why I needed this Kahr. The dealer lets me dry fire it, and it isn't much different than my race-tuned S&W revolver's double action pull. That clinched it.
Since then, I've put just over 100 rounds of assorted 115gr ball and 115gr Silvertips through it, to include 50 rounds at my favorite steel plate rack at 25 yards. The "Used Kahr" hasn't hiccuped in firing even once, and those steel plates fell with authority, just line up the top of the sights with the top of the plate, and "Clang!". The DAO pull really is that smooth.
What to watch out for? My particular gun shoots a bit low, but I'll fix that when I parkerize it, after shortening the front sight. It does have a tight chamber, or rather, a short throat, and I had one heck of a time trying to open the slide on a chambered round that was just a bit too long in OAL. I ended up using a piece of wood against the ejection port and driving the pistol forward into the soil of my back yard, I didn't want an AD that sent a bullet into the wrong direction. The blueing on the slide was worn and blotched, but the slide and frame are steel, and will take a bead blast and parkerizing, my preferred finish for my "tools". I've heard that Kahr has since then come up with a more durable blueing for their non-stainless K9's.
Once you've got it unloaded and checked for an empty chamber, takedown is a bit tricky, in that you have to hold the slide open in the proper position against the stout recoil spring, then drive the takedown pin out using a dowel or soft mallet, vs. simply pushing it out like a 1911. Kahr now sells a takedown plug that aligns the slide when inserted into the chamber. Once the takedown pin is out, you snap the trigger to release the half-cocked striker, and move the slide forward off the frame rails. From there on it's much like a 1911, with the recoil spring under the barrel on it's guide rod, then the barrel pops out of the slide. Owner's manuals are $5.00 from Kahr's website, but I doubt you'll have much trouble with your pistol. I figured if I didn't like mine, I could sell it fairly easily, but now it's become a keeper.