This mount was designed specifically for the Trijicon MRO, and offers a 1/3rd co-witness height which positions the optic above the iron sight for an unobstructed view of the target, but the iron sights will remain visible in the lower 1/3rd of your optical window for use as backup sights. This mount can be locked to both the front and rear for ambidextrous use, and the paddle features am expanded grip zone for easier installation and removal. In addition, this mount is constructed from lightweight aircraft grade aluminum and is Mil-Spec drop test rated.