As an emergency in case of optics failure. I mounted iron sights as pictured. Tried the left side thinking the ejection port pointed down would be best but aiming is very awkward. Not bad at all on the right side, just a little concerned with the ejection port pointed straight up. Have not been to the range yet. Anybody have any experience or feedback on this? FYI, I'm aware of the "gangsta" angle with shooting sideways.