JOELL, I've been a Kahr carrier for years, all of mine are stainless models, all are totally reliable. My every day Kahr is a MK40 Elite, it's without question the best handgun I have ever owned, that includes three Glocks, 4 S&W's, a Colt, a couple of Rugers, three not to good Kel-Tecs and a host of others. I even have an old stainless Kahr Covert in .40 S&W that I'm not too fond of because it feels nose heavy to me. In addition to the Covert, and the MK40 I have a K40 and a K9, all stainless. Now for my point, all that I have read and experienced over the years seems to indicate that the polymer framed Kahrs are not as reliable and seem to be more troublesome than their stainless brothers. One school of thought is that the frame is too light for the slide which tends to cause some folks to limp wrist, Glocks with their polymer frames seem to have a better balance between frame and slide and were designed from the ground up to have a polymer frame. Kahr's on the other hand were designed from the ground up to be all stainless and their polymer frames were an after thought and on the early models didn't seem to work well. Kahr went to polymer frames because some folks thought they were too heavy. Not being a gun smith, I can't begin to you explain why the stainless models seem to be much more trouble free, they just are. If you bounce around the various gun forums, do a search on the polymer Kahrs and the all stainless Kahrs and I'll bet you a beer you'll find far more bitches about the polymer frame models. The stainless are slightly heavier but they feel more like a "real" gun and in my opinion a more reliable pistol.