Intermittent laser - SightMark Core HX 2.0 Laser Sight

This laser is very bright day or night as described. The laser began to cutoff intermittently, even with new batteries installed. The rubber switch cover tears very easily. I am sending it back to Sightmark for warranty service. I'll write a review afterwards.
Pros: Very bright when working day and night
Cons: takes up lots of rail, hangs very low, heavy

This review was written in the old system and had content requirements that are different than reviews written today.