The holosun he507k-gr x2 / hs507k x2 is an exceptional reflex sight. It offers unmatched versatility, durability, and performance.

Red dot reticle is far too high and out of view unless i point the * downward. My dot randomly get dimmer or brighter without me touching anything usually gets dimmer.

Hope they can straighten this out. Their rma process is trash. Completely unacceptable. No response whatsoever.

This unit was replaced by the service dept with a 507k at my choosing. The manufacturer claims battery life is “up to 50k hrs’. That equals 2073 days or 5.

Long review but informative. Must buy. My affordable go to.

Good sights, well finished, easily installed, and durable. Notthe brightest glow but still pretty good. Sharp aim at night nice and bright.

The rear sight is below my trijicon rmr. They really aren't on target at any range zero (a couple inches low) to 50 yds (a foot low) shot in low light and was almost impossible to see my front sight. Does not fit glock 40 mos with red dot.

The problem is when i order these thru amazon, the sellers will send you ones that have tiny factory flaws. Attempted to return on amazon, of course they are not eligible for return. Probably pawning off their defective junk.