The Smith & Wesson M&P M2.0 Slide Cut For Trijicon RMR Optical Sight Installation updates your trusted M&P9 M2.0 pistol to take advantage of today's great optic sights. INCLUDES: SLIDE AND OPTIC HEIGHT SIGHTS ONLY. Use your original frame assembly, barrel, and recoil spring. For use with 4.25" barrels. FeaturesOptic Ready - Milled to directly mount any Trijicon RMR pattern optic, the user can mount a variety of aftermarket optics systems on these slides.Drop-in Fit - Change the slide on your M&P pistol to swap between various optical sight options with greater ease.Co-witness Height White Dot Sights - Provides an optimal sight picture in poor lighting conditions. Allows use of open sights when optical sight is mounted. Note: Check your current slide for M2.0 markings. This will not fit prior versions.