My P320SC came with the S-S grip module and I'm interested in a slightly bigger grip for better control. I know the S-M module comes with a rail (which I don't need); do the grip dimensions vary too?
I put a WTT in the Classifieds here to see if I can find one on the forum before paying for a new one. I'll keep my fingers crossed that I can save $40 and help out another forum member at the same time.