I see some rifles equipped with their iron sights looking through a red dot, which is usually positioned halfway down the receiver.
Is this effective? I can maybe see how it would provide an aperture effect, but it seems like it would be hell to line up quickly. Seems like it would be difficult to match the height of all three components.
I do plan to try it out once I find a set of iron sights for the rifle, but in the meantime, Educate Me?