Earl, the main difference is the G2C is a double stack magazine that holds 12 rds and the G2S is a single stack magazine, which holds 7 rds. The weight is within about an ounce or two of each other unloaded and about 3 or so ounces loaded. Another difference would be the pinky rest on the G2C magazine whereas the G2S is more flush with the base. I think it would definitely depend on your hand size on whether you want the G2S or the G2C and the magazine capacity you want to have. Here is a video I found that shows more about the differences, hopefully it helps, good luck! https://bit.ly/2ttVezS

Earl - Here you go. This video covers it. youtube.com/watch?v=GRzGGw16DHE