PM9-Different kind of peening problem. Pics

[BulletTime]

I had to send my PM9 back to Kahr for barrel peening problems in Feb. with only 300 rds (3 days old). The corners of the barrel hood was being mashed up, making a hump on top of the hood. I had no marks on the inside of the slide. Kahr replaced barrel and slide.

This time after 1100 rds (3 months old) I noticed shiny marks in the inside of the top part of the slide (in a curved area). My barrel hood has matching marks where the hood is hitting the inside area of the slide. The hood has small dents in it from hitting the hood.
Is this going to get worse?
It's not the same peening problem I had before, this time the hood is dented instead of being mashed up.

See photos and tell me if I should be concerned.

Inside of slide, the curved area that you see to the left of center is shiny metal (hood contact area).
http://i80.photobucket.com/albums/j196/Photodump2002/IMG_2147.jpg


The corners of the hood are dented where it contacts the slide (photo makes it look worse than it is)
http://i80.photobucket.com/albums/j196/Photodump2002/IMG_2149.jpg


http://i80.photobucket.com/albums/j196/Photodump2002/IMG_2153.jpg

[BulletTime]

Just a thought,
Could a weak recoil spring cause this problem (only 1100rds).
I hope this is not how you find out it's time to replace the recoil spring.

Thanks
BulletTime

[warmrain]

Originally posted by BulletTime
Just a thought,
Could a weak recoil spring cause this problem (only 1100rds).
I hope this is not how you find out it's time to replace the recoil spring.

Thanks
BulletTime
I don't think so, not if my MK9 is representative... I have over 3,000 rounds on the original recoil spring and no sign of peening...!