"I" would only get a kahr if I wanted to pocket carry, that being said I don't own a kahr.....
I wouldn't get a 43 either though...I'd get a 42 which has less recoil and for me, I shoot a 380 tiny pistol better than a tiny 9mm..... I also feel that 90 grain gold dots put in the right spot should do the job...I could be wrong though, wouldn't be the 1st time...
The pearce extension is recommended