Easy to zero, very durable - Diamondhead Combat Sight Top Mounted Deployable Iron Sight

I ran these sights on an Aero M4E1 upper and they were very close to my zero out on the box. You can adjust the windage with a standard screw driver. Diamondhead could improve this product my including a hand adjustment. For now just zero it and forget about it. There are two different sized apertures on the rear sight that you can flip between. The smaller diamond is great at 50-80 yards and the large diamond works well at 45 and under. I paired these sights with a holosun HE510 holographic sight and the front diamond holds the outer ring. Basically, the sights look really good through an absolute cowitness optic. Overall these sights are impressive and worth the price in my opinion.