You guys that are complaining about the rear sight being "blurry" realize that is how peeps work, right? You focus on the front sight and the target, your eye will automatically center the front post in the blurred rear sight.
I was thinking the same thing 8 ball, wasn't going to post the obvious, just have to remember we have a very mixed bag as far as experience goes on here in regards to iron sight marksmanship. So I agree with your post X2.
Most people have no idea how to shoot a rifle over aperture sights, the very best type put on any rifle for accuracy and functionality. How do I know this? Just by helping others with a few simple pointers and guess what, ...Bingo, they're shooting like champs. My wife,son and daughter ,and friends included.
Helped a friend just two weeks ago who was concerned if he should sell a No4Mk1 P-H and not procede to scope it due to very poor accuracy he was getting. I said bring her out to our range with me, I'll try it over irons and see what we get.
The lovely sportered P-H No4Mk1 with it's correct milled rear Mk1 sight and pristine bore of course was a nail driver using W-w 180s on the short 50 yard we picked due to weather. He said,.. "I can't hit a damn thing with that gun", but he could perform very well with any patridge type sighted firearm.
A simple 2-3 minute explanation on aperture sight usage, spot weld, stock weld etc and he fired 5, three shot groups, very tightly into the 5 of 2" orange bulls at 50 yards some only 1" groups!! A way better shooter than me now because I can't see them like I used to hehe.
He brought good basic marksmanship skills to the range already, like most guys do here, but just didn't understand aperture iron sight's like so many younger people today who never trained with them in the Army or competitive civilian target rifle. His old jack handle .303 had now become his pride and joy.
When you understand and learn your irons you will love them for life. There are better sights for specific purposes you can add to your Black Rifle, dots for CQB, glass for long range with poor target visibilty like Elcans or Acogs and so on, but these iron sights are robust and very useable. Learn them well.
It's rarely the rifle, more often the shooter, sorry.
My son was recognized for the best scores during his basic training on the C7A2, but still needed instruction on aperture sight use on his own Armalite M15A4. There are excellent quality aperture sights and there are cheap ones like the plastic ones on my M-1 22 Chiappa USGI Carbine copy, but you know,... they still shoot to POA when sighted well and used correctly!