Good lower cost option, 5 stars based on the field it's in - Primary Arms SLx MD-25 Rotary Knob 25mm Microdot Red Dot Sight

For a lower cost option this optic works well. It's $200 not $400 - $700 so I knew what I was getting. So no It's not as heavily built , the dot (acss reticle in this case) is clear but not as crisp , the included mounting options are good and work , the glass is clear , BUT not $$$$ priced good. I have no complaints at all. Yes it will lower 1/3 co witness with a fixed A2 (F marked) front sight just fine with the included mounting risers. Yes if you want to take full advantage of the reticle get a magnifier. This is my second purchase of a Primary Arms product.