Originally Posted by Polygon
I have a Kahr PM9. It's having some failures to feed where the slide locks back as if the magazine is empty but the round is nose down. It's as if the bullet it hitting the slide lever. This is a known issue with the PM9 and a lot of people file them down to correct it.
The question is, how should I go about this? I don't want to remove too much. Also, what kind of file should use?
It does sound like the same issue I had with my P380. I found the same sort of info you mentioned: filing the little tab that catches the mag follower. I did mine in 2 stages so that I wouldn't over-do it. The 1st time, I filed about .008" off. This seemed to help at 1st, but the same thing ended up happening a few more times, so I filed off about the same amount again, for a total of ~.015-.016".
You could probably use a jeweler's file or similar, but I already had 4" & 6" smooth files. Either one would work. The nail file isn't a bad idea, but it might not work very long on a relatively tough part like the slide stop lever. If there's a discount tool store around, you should be able to find something for just a few bucks.
Just be careful - go slow & try to keep the same angle on the little tab. You may not need to take off as much as I did, so maybe test it after .005" or so. Like they always say, it's a LOT
harder to put a little bit back on