Great to have diopter adjustment - Primary Arms SLX 1X MicroPrism

This is a fantastic sight all around, but especially because it features a diopter adjustment to allow any user's eye to clearly see the reticle while focusing at distance. A real win for folks who wear reading glasses. Other than that, it's very well built and seems to hold zero very well, although I haven't beat mine up much to really put that aspect to the test. Brightness settings for the illuminated red reticle go through the full range and the "off" position between each brightness level is very practical.