Primary Arms Flip To Side Magnifier Tall Mount, Black MAGNIFIER MOUNT: Place magnifiers behind raised base EOTechs and other high mounted red dots. CENTER HEIGHT: Places the center of the magnifier 1.75 inches above the top of the 1913 Picatinny rail. FLIP TO SIDE: Pull the magnifier to the rear to unlock the mount allowing you to choose between the centerline and off-centerline positions.