Sniper MFLRS01 Removable Flip-up Tactical Rear Sight Complete with Dual Aiming Aperture Integral Picatinny Mounting Deck to Fit All Flat Tops Equipped with Locking Retention Thumb Nut Precision Windage and Elevation Adjustments Dual Aiming Apertures for All Shooting Requirements Synchronize Iron Sight with Tactical Dot/Reticle