It is very nice so far. It has a pause between the time you press the brightness adjustment to when it actually changes, which takes a little getting used to, but that's minor. It is a huge step up from the Holosun 515BU that was on it. To be fair, they are not the same type of sight, but I like the bigger screen of the reflex over the smaller red dot. It is a smidge heavier as well, but that's minor to me too. So far on a scale of 1 to 10 I would give it an 8, point deducted for price, $329 @ Optics Planet, and a point off for the starburst that the dot gives off, but I have astigmatism, so some of it is me. I have a Trijicon RM07 on my Glock 40 10mm that is a nice sharp dot, but that little sucker cost me over $400 at Cabela's Bargain Cave. Overall I am happy with it, and feel it will last me a lifetime of shooting with it. I would recommend it for a PDW sized weapon, or a PCC.