I have a P9 that has been back to factory twice now. 1st time the slide lock would engage after every shot. Sent it in, it came back and low and behold the slide lock would not engage all right, it wouldn't engage at all, even on an empty mag! Not only that but they must have done something to the trigger as it would not engage after every shot, you would have to pull the trigger twice to get it to engage.
Sent it back again and they fixed all the problems, new slide lock and reworked the trigger bar. So far no problem and I have run about 300 rds through it.
It kind of pissed me off that it happened in the 1st place, BUT I must say the Kahr's customer service is excellent, any time I called to check on progress my questions were answered quickly, or they would call back with the info.
I'm not sure if I would buy another Kahr though, this is the 1st time I have ever had to send a gun back to the factory, so it soured me a little, if I didn't like the pistol so much I would sell it...