The 3x magnifier also includes a multi position, military-grade flip-to-side quick release levered mount which makes mounting and unmounting the optic from the host platform quick and easy. This mount is also designed to flip into place over the top of back up iron sights commonly used on modern sporting rifles. Each magnifier includes a riser plate and additional fasteners to allow the optic to align with either 1/3rd or Full Co-Witness MRO HD mounts. NOTE: The Trijicon MRO HD Magnifier has a unique footprint and will only work with the Trijicon magnifier mount. Therefore, the magnifer and magnifer mount are only sold as a pair. Features: Submersion Depth: 33 ft. Housing Material: Aluminum Diopter Range: -2.5 / +2 Mount: Adjustable Quick Release Levered, Flip to Side Mount Field of View (ft): 37.5 Field of View (degrees): 7.2 Exit Pupil: 0.2 in. Eye Relief: 2.6 in. Adjustment Range: 60 MOA Weight: 6.5oz Dimensions (LxWxH): 2.9 in. x 1.5 in. x 1.7 in. Objective Size: 25mm