Buy once, cry once: good quality - Holosun HS510C 3x Circle Dot Sight w/HM3X Magnifier Combo

While I haven't taken this setup to the range per se, I like what I see in terms of how clearly I can see an object at a distance. Using my range finder, I was able to easily see targets out to 315 yards using the 3X magnifier. The red dot sight is decent, in that it has three different sight pictures (dot, circle, dot+circle) and one can easily transition from one site picture to one of their choice.I believe it has eight different levels of brightness so as to accommodate daytime, night, or indoor usage. The swivel on the magnifier is tight and robust enough where it won't accidentally swing out of position unless deliberately pushed upon. I also like the hardcase it comes in and the rubber lense caps for the magnifier. True enough, this setup adds a bit of weight to one's rifle but the trade-off is definitely worth it because of the versatility you gain being able to engage targets up close or at a distance