OK. So I sent in my PM9 for warranty work due to the flaking on the lining of the chamber and the peening on the breech face (see above posts for pics). Keep in mind I've already had to contact Kahr about a faulty guide rod and i've been trying to resolve this latest issue for over a month. Initially I filled out the online Return Authorization (RA), as Kahr customer service recommended, but never received a response. I submitted a second online RA request - same result. After a couple of weeks I called and spoke to a tech who immediately gave me an RA number. I shipped it out last Saturday, at an out of pocket cost of $38 via FedEx. If you are planning on returning a Kahr pistol do not waste your time with their online forms; but I digress...
I received a call from a Kahr tech today. Nice guy. He said the barrel is obviously defective but that he'd never seen peening on a breech face that bad and the trigger pins were also failing. He indicated they would have to replace the whole gun, which was an outcome I was content with until he informed me they would be sending me a MA-compliant version complete with safety and loaded chamber indicator.
I had paid a premium for the "free state" version, so I informed him that I wasnt interested in that, but was told my only options were a new MA-compliant PM9 or the return of my old one which he had just described as the most f'd up Kahr he'd ever seen. I "chose" the former.
Now, I am fully aware that all firearm companies will occassionally produce a lemon, and my experience is probably not indicative of the quality of Kahrs as a whole, so take my experience for whatever it's worth...and watch the classified section in a couple of weeks for a nice and safe NIB PM9.