Got some emails with Father's Day Sales and both DVOR and SIG have SIG 320 grip modules one sale including "X5" grip modules. Looks like you can buy a full size X5 module minus grip weight and mag well (all medium). I have one SIG 320 9mm full size and considering trying a X5 grip module. Anyone have experience with X5 normal FS versus X5 full size grip modules? Thanks