Metal inserts for TnG Hefty Striker:

2x- 3/32 Tungsten welding electrodes
1x M5 Tungsten or Brass rod

Insert electrodes into the small holes, cut off at the top

insert M5 tungsten or brass rod into the top, cut where it overhangs the plastic

(use thin coating of epoxy for best results)

firing pin and guide rod will be the same as the lightweight striker