Over the years, I’ve discovered you can know a great deal about a thermal weapon sight based on how easy or hard or damned near impossible it is to zero that thermal. Invariably, the easier the zeroing process, the better overall quality of the thermal. That’s why I was pretty sure the WAVE Infrared ATRIS 650 LRF V²was a top-end thermal, even though I’d only shot under a dozen rounds in my early testing of the unit.