Im having a hard time finding 10 round clips for my new S9. Does anyone know what the difference is between a 10 round clip for a M9 and an a 10 round clip for the S9? Thanks.
The only difference is the size of the baseplate. So yes, you can use any M9 magazine in an S9 (including hi-caps). It will stick out of the bottom of the gun about 1/2" BTW - they're magazines, not clips.
you really only need one S magazine anyway. I load up my two 14rnd M9 mags and my one S9 mag when i go to the range w/ the S9. Works great and w/ my meaty fingers the extra 1/2" sticking out the bottom makes it a more comfortable grip anyway. The S just conceals better so having that extra 1/2" sticking out is not good for ccw. I never really take any extra mags w/ me when i ccw anyway, but if i did it would be the 14 rounder anyway.