Keep in mind that the high capacity is a double stack. It will have a wider grip. You might want to look at the Mil-Spec model instead of the GI. The Mil-Spec has improvements over the GI such as lowered ejection port and better sights. The Mil-Spec can be found for around $500-575. If you want some grips that will widen the gun some but not too much you should look at the Hogue Wraparound rubber grips.