Oleg, I really liked the P9 when I bought it. But look through these forums where people detail their problems with polymer Kahrs - except for a broken frame, I had just about EVERY problem others have had. Premature slide lockback, failure to go into battery, trigger pin walkout, failure to activate striker when trigger is pulled - you name it, my P9 (or is it POS9?) had it.
Kahr, as a company, treated me ethically, and ultimately replaced the pistol. But like the saying goes, "Once burned, twice shy."
I now carry a Glock 26.
It's thicker than the POS9 was, but the G26 works very well indeed.