Useless if you have astigamatism - Primary Arms SLx MD-25 Rotary Knob 1x25mm Microdot Reflex Sight

If you have an astigmatism, this is useless. Go with the Cyclops Gen 2 Prism scope. Even without astigmatism, the reticle is too small without a magnifier. Unless you are using the MOA ring for CQB or quick target acquisition for home defense. It is well built. Knobs turn easy. Auto Live is awesome. I can't give it a poor rating due to my own personal vision issues. It is a very nice product but just needs to be paired with a magnifier to maximize its intended use.