This mount fits: HK VP9 Optics Ready Models HK VP9 Tactical Optics Ready HK VP9L Optics Ready (This mount is comparable to the HK VP9 Optics Ready #2 Plate) The screws that come with your slide to mount the plate to the slide may be reused, they are not provided with the plate. HK recommends replacing the plate mounting screws after 2,000 rounds. HK recommends torquing the screws for the plate to 2Nm or 17.7 in/lbs. The screws to mount the red dot to the plate are provided at no extra cost. We recommend using 15 in/lbs. Please note: Trijicon recommends the use of a sealing plate to prevent water from entering their dots. Simply remove the plate on your gun and replace it with our mount in order to mount your Trijicon RMR or Holosun red-dot sight. You can take our mount off and replace your rear sight at any time. Red dot mounting hardware included. Installation Instructions – Remove the rear cover plate – Install the EGW sight mount and torque the mounting plate screws – Place the red dot sight on the EGW Sight Mount placing a small piece of paper between the red dot sight and the sight mount will make for easier removal and will keep Loctite off of the red dot sight. Apply blue Loctite to the provided mounting screws – Torque red dot mounting screws to 15in/lbs.