I have quite a few Glocks, but Many of them are rocking optics or some type of aftermarket Tritium or Fiber Optic sights. I found out these were being a no go for the Recover Tactical charging tackle. The charging take care of bolts onto your slide with two screws https://rafaelgrcnx.techionblog.com/26925355/not-known-facts-about-recover-20-20