The Ghost complete spring kit provides all the springs needed for you to adapt your trigger pull weights for either sport shooting or self-defense applications. NotesTrigger spring is not used on gen 5 pistolsThe 4.0 lb firing pin spring included in the kit is for sport/target configuration and may cause light primer strikes in some pistols.DISCLAIMER: This product is not manufactured, authorized, endorsed, or warranted by GLOCK. GLOCK does not warrant or represent that this product is compatible with GLOCK pistols.