Grip extentions for 13 rounders??? 9mm??? Why???
Save the grip extenders for your Glock 22 mags. I use G22 mags for reloads when I carry my G23.
My favorite mods:
Warren Sevigny Target sights, front fibreoptic, rear plain
XS big dot sites, for my night time pistol (contacts not in, eye glasses not where they should be etc.)
Lone Wolf SS or Tungston guide rod
Zevtech Fulcrum Trigger kit
Zevtech Comp Spring kit
Zevtech Lite striker
Lone wolf 3.5 connector
Zevteck Ti FP safety
Brass grip plug (weight)
Glock 32 barrel