Pretty impressed - Leapers UTG 3X Magnifier w/ Flip-to-side QD Mount

With the affordability for this magnifier, I am pretty impressed with the overall quality and functionality. It is definitely in line with a lower 1/3 co witness perfectly which I set up at first to pair with my Holosun 503cu. I first tried it with the factory Holosun lower 1/3 mount and and saw it was directly in line with the magnifier. I then put my optic on my Leapers optic riser which brings it just a little bit above lower 1/3 co witness (how I want to run it) and while the optic sits slightly higher than the magnifier, it still does the job without any blur or double vision which I was surprised with. The flip up and down is not too hard like other reviews have mentioned, I prefer the rigidity personally. Eye relief could be an issue as you need to suck into the magnifier a bit to get a clearer sight picture, or run it and your optic further back (closer to you) but then you run into clearance issues with your ambi charging handle and where you prefer your optic which I prefer mine as far forward on the upper as possible. Because I only plan on really utilizing it for longer shots, it certainly will suffice at the price point and the coupons I was able to apply. Have not put live rounds with this but dry fire and hi/low ready snaps so I can't attest to how it operates in the field.