The Spark Core is such an incredible NV monocle, really a Gen2 / Gen 1 hybrid, not sole Gen 1. But.... this mount is a pure waste of time and money. The Core MUST be aligned just right with your eye to get a crisp image and this mount on an ACH issue helmet and issue Rhino mount does not allow proper alignment. More troubling, the mount does not allow the eyepiece to get close enough to the eye like a PVS14 can get with a standard J arm. Because of this, there is no proper focus and no field of view making the optic unusable, period!
This review was written in the old system and had content requirements that are different than reviews written today.