Explanation of Co-Witness
Now, I have around this business for a bit now, on both ends of the spectrum, from the .mil side to the industry side.
I think there is common misconception on what Co-Witnessing really is, as to a true definition. Now I am going to put it to the people without my 2 cents and see what the public says Vs what the operators and shooters tend to say (and I will say that there are Tier 1 Operators that do not agree also on this very topic).
This term is thrown around so loosely without a true "text book" definition.
So here it is:
Co-Witness is -
A - Having the ability to be able to align your Iron Sights or BUIS through your Optics / Red dots (where it locates in the glass it does not matter {middle / bottom 1/3}), leaving your red dot Zeroed.
B - Sighting in your Optics / Red Dots and then bringing your Iron Sights or BUIS to align with the Red Dots.