TL;DR: Good quality built, crisp glass, plenty of brightness settings, but eye relief is poor and reticle is absurdly small.
Long version:
The RT-3 is a prism sight that I had hoped would be great to use on a PCC (Pistol Caliber Carbine, for those that dont know) for that medium range between 20-30yrds just to have a clearer picture while plinking. While it certainly does do that just fine, the reticle is lacking in size. There was an assumption that the reticle would take up most of the area in the sight itself, but it takes up only a very small fraction. To give an idea, the reticle is small enough to fit in a rectangular target that's 3¾" x 5½" in size, 20 yards away just fine, with some room to spare. Even the '4' number at the bottom right can barely be seen as a number. It makes the windage markings feel useless at that point.
Sure, it has a 'focus' dial to zoom in on the reticle, but then the FoV shrinks, and that said reticle becomes blurry.
The glass is real nice, however. It has clarity with no distortion around the edges. The housing is built quite well also. It feels light enough to not have a noticable difference when added to the PCC I'm using.
Theres seven illumination options. The brightest for daytime, and the lowest for NVG's. Don't ask how that is, I don't have those, haven't tried.
The eye relief is another problem, its real specific. Anything more than 4" it doesn’t like to be looked through. Less than 2", it doesn't like either.
Overall, 6/10
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