The Trijicon Miniature Rifle Optic (MRO) HD Magnifier is a 3-power reflex optic magnifier specifically designed to magnify the target and target seen through the MRO HD red dot optic. By magnifying the target, the shooter is able to use the crisp dot in the MRO HD to quickly and accurately engage targets at extended distances. These Red Dot Sight Magnifiers are short and compact, which saves weight and rail space. The design features an easy-to-set flush, toolless adjusters that make centering the reticle in the field of view easy. The adjustable diopter allows the user to tune the optical performance of their eyes. The Trijicon 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 backup 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 magnifier and magnifier mount are only sold as a pair. Specifications for Trijicon MRO HD 3X Red Dot Sight Magnifiers: Manufacturer: Trijicon Magnification: 3 x Objective Lens Diameter: 25 mm Eye Relief: 2.6 in Length: 2.9 in Weight: 6.5 oz Field of View, Linear: 37.5 ft at 100 yds Attachment/Mount Type: Quick Release Field of View, Angle: 7.2 degrees Fabric/Material: Aluminum Included Accessories: Warranty Card, Mounting Tools and Fasteners, Adjustable Quick Release Mount, MRO HD Magnifier Manual, Trijicon Logo Sticker Width: 1.5 in Height: 1.7 in Color: Black Exit Pupil: 0.2 in Diopter Adjustment Range: -2.5 - 2 dpt Features of Trijicon MRO HD 3X Red Dot Sight Magnifiers 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 Package Contents: Trijicon MRO HD 3X Red Dot Sight Magnifiers Adjustable Quick Release Mount Trijicon Logo Sticker MRO HD Magnifier Manual Warranty Card Mounting Tools and Fasteners