MRO Return to Zero mount boasts a low weight and low profile design, compatible with any Picatinny rail
Mil-Spec drop test rated 7075-T6 aluminum design
Easy to use one handed tool less mounting system
Lower 1/3 co-witness means that the MRO is mounted higher than the iron sights resulting in a clearer field of view; The iron sights remain visible in the lower 1/3 of your optical window for use as a backup
Distance From Top of Mounting Rail to Optical Axis: 1.66 in.