Excellent value green dot - ADE Advanced Optics Advanced Optics RD3-006 1x Reflex Green Dot Sight w/Colt 1911 Mount Plate

I purchased this green dot for a custom project after comparing several options that cost twice as much. The glass is surprisingly clear, the green dot is easy to pick up outdoors, and the adjustments were straightforward. After several range trips it has maintained zero without any issues. For the price, this is one of the better values I've found.