Originally Posted by
AR15freak
I never understood why some would want a lower 1/3 co witness. I only want to have one point of aim when I look through the scope, not two separate ones. BUIS means backup.. Point is that iron sights used to be the primary sighting system for fighting rifles, but now they are used more as a backup option should your red dot fail. Since the human eye picks up the red dot quicker than an iron sight post it makes sense to use it as your main sighting system.. However since the BUIS are in a fixed position on the rifle and don't move, you need to sight them in first, then align the red dot to the BUIS.. I have always done it that way, it was taught to me that way, and I believe that is the right way.. however others with far more experience than me may do things differently. If it works then more power to them.
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