There was batch of barrels with some iffy plating as I recall. More a cosmetic than functioning thing, but I suppose it might effect the functioning under severe conditions.
Kahr is probably still making good on a few of those now and again.
Thats about all I can think of. Got an older PM9 the "Jocko" model, and couldn't be happier with it. Eats ammo like Cookie Monster eats Oreos.
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Read the friendly manual *** The notch in the rail is supposed to be there (so quit askin' about it!) *** If you ever have to manually extract an empty case from an auto-loaders chamber, don't shoot again until you've checked for bore obstructions.
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