Great product at a budget price - Sightmark 3x Tactical Magnifier - Slide-to-Side SM19024

This optic is very clear and works as good as you could expect it to. Feels and looks sturdy. The QD mount is exceptional and is adjustable as well. Besides the windage and elevation adjustment to center you dot/irons there is a focus adjustment by turning the eye ring either direction. I didn’t realize this at first but once adjusted it really makes all the difference. It doesn’t mention the focus in the manual so putting that out there for those it may help. I’ve read reviews that claim there is a fish eye effect, adjust your focus ring. I’ve also read the QD clamp stops working. No it doesn’t. When off the gun it can turn to tighten or loosen, its adjustable. Now for the flip to side. That also works great. Plenty of room for flip up sights to be folded under this magnifier, then flip to side and flip up irons. Very easy to flip over and put back in place. I can’t believe how cheap the price is and I highly recommend it.