Then I would say those gunners are also miffed at seeing their cheese moved
Durn newfangled claptrap
I will see your four gunners and raise you Pat Rogers
Nobody said irons were obsolete...merely that optics are an advantage...yes...hard as it is to believe...time marches on...things improve and even the military can recognize it on occaison
Although they generally need to be dragged kicking and screaming into the latest century
Notice I said everyone should be able to shoot with irons...but to say they are superior is silly
You can get solid hits on man sized targets out to 300 yards with an Aimpoint
The ACOG is less friendly at extremely close range(<50yds) but works very well and allows more precision at longer ranges...like out to 400 yds and beyond
The S&B is something of a jack-of-all-trades but at an increased cost
Fast accurate first round hits are still the name of the game and an optic drastically increases the odds of that happening
Of course there are plusses and minuses to the different units...otherwise there would be only one...but it woul not likely be the irons
The CORPS picked the ACOG over the Aimpoint and I personally think that is a bad idea....most of their engagements are not at extended range, are likely to be on moving targets and do not require the added precision of a magnified optic
A non-magnified optic like the aimpoint is superior to all of the above (including the beloved iron sites) for speed and especially on moving targets....there is no eye relief to worry about and they allow a heads up both eyes open situational awareness that no iron-site or magnified optic will give you