9mm 8 round mag misfeed in CM9

[DKRanch]

I have a couple of 8 round mags I recently picked up, they both misfeed causing jams in both of my KAHR CM9's. The misfeeds occur when racking the slides or using the slide lock realease and when firing. I have seen where others have had problems with the 8 rounders as well. Any suggestions? Both guns are always clean when I start. This occurs with both Herters and Remington 115 FMJ and also Corbon +P 115 JHP So I know it's not the ammo.

[dustnchips]

Check the width of the mag lips with mags that work. Make sure the mag lips are smooth. Wait for someone else who really knows something to answer you.

[DKRanch]

Check the width of the mag lips with mags that work. Make sure the mag lips are smooth. Wait for someone else who really knows something to answer you.
Forgot to add to original post they are KAHR brand mags.