Shake awake is useful and will hopefully extend battery life. I wish all manufacturers would put the battery compartment on top. The shake awake works and have top load battery compartment means i don’t have to disassemble when need to change.

Bought this brand after a bunch of research. This product is a no brainer. Would highly recommend, especially for the price.

The new green dot works fantastic, especially against brown or red dirt backdrops. This dot truly beats my venom hands down. I've not been disappointed.

The * are tactile and easy to operate, and the elevation and windage screws are easy to adjust (with standard screwdriver) i have astigmatism, and run the dot at the lower end of brightness, and it's clear. Glass is clear.

Unfortunately, the rear portion of the slide now blocks the bottom approximately 1/3 of the locking screws you use to hold the windage and elevation adjustments in place. Had high hopes for this optic considering the amount of reviews and youtube vide...  Read More

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.