Although the sight looks nice, and the riser is a good touch, the red dot is too dim to be used during the day, even on its brightest setting

Unfortunately even at the brightest setting the dot is barely visible, I tried multiple batteries to no avail.

Unfortunately on the brightest setting is invisible when I aim outside or out the window

At it's brightest setting 11 I could see something barely perceptible; possibly a red dot

Do not buy this item unless you enjoy a $40 paper weight, it was so dim on the brightest setting that you'll need to be in the darkest area in your attic before you can even see the dot on the highest setting, if your going to spend you money on this red dot look at red dots from Firefield or anywhere else and spend 20 bucks more for a solid dot

At dusk the highest setting looks a little bit brighter than the lowest setting on my sightmark red dot

Unfortunately on the brightest setting is invisible when I aim outside or out the window

The brightest setting is easy to see, even in on a sunny day

And I could not see the red dot when I turned the setting to the mid range in the dimly lit room, so the lower setting essentially are turning the LED off

In low light, the lower setting renders it virtually invisible from the front while casting a discernible dot the shooter can see

When I used this for the first time it was a bright sunny day out and the only way I could see the reticle was if it was on the brightest setting.

The brightest setting is really bright and highly visible even in bright environments

Pic is of brightest setting, sight was purchased for first AR bought a few days prior and is easy for newer users to zero