Whelen would probably rap the fiberoptic sight with his pipe bowl as a first test before lighting up.
Peep and post works well.
I scored 299/300 on M16 qualifying with peep and post.
I suspect they locked the 300-meter silhouette on my 300th shot, so as not to let a plebe get a perfect score.
Either that or I shot the center out of the 300 meter target,
back when I could see like Chuck Yeager and Ted Williams with my spectacles on.