f you have purchased a Noveske DM Slide, you will need to purchase a FMRS (Forward Mounted Rear Sight) to mount your optic of choice. Pick from the dropdown menu below.

Each option comes with the correct FMRS kit for your optic along with mounting screws to mount the rear sight.  The rear sight plate screws are 1/16″ Alan.  The single FMRS screw is a T10. The DPP option will require the use of  the factory screws that came with the optic.