The VP9 SK Optics ready slide quickly and easily converts a standard VP9SK OR VP9SK-B to an optics ready platform. Just install your existing barrel and recoil spring. - VP9SK Optics ready slide includes: - Cocking supports - Complete firing pin assembly - Cover plate for optics cut - Suppressor height sights. Black serrated rear and high contrast front sight. - The Suppressor Height sights are specific for lower 1/3 co-witness with a mounted RMR. Other sights may vary.