I have the PM9 and it's my EDC.
I am still amazed at how easy it is to shoot that cartridge in a platform that light.
My buddy bought a P40 second-hand.
He never used it but loaned it to someone who was taking a CC class.
It came back in pieces...the rails on the frame blew out.
No injuries but Kahr was VERY interested in getting it back and replacing it.
He went on to sell the replacement.
First I've hear of this happening.
I'm pretty sure (not 100%) that it was factory ammo being run through it when it kaboomed.
Read the Kahr forums for more reports...I haven't been on there for years.