IMO if you're going no magnification and were talking under 100 yards plain old open sights give a much better sight picture.
I guess if you shoot with both eyes open that would remedy the problem but I only shoot with one eye and can't stand how much of the sight picture a peep takes away.
I've shouldered but not fired the military issue rifles at a recruiting booth for the army, it was cool though they had that whole training simulator screen with enemies flooding in and the recoil was produced by air compressors. I've fired a 308 scar with a peep.
I can see how it would help accuracy, but when it comes to target accusation I feel open sights are "faster" ,now that could be just my limited understanding or experience with them.