User blog comment:Bearded Hoplite/Best Iron Sights/@comment-1790643-20100302164238

SCAR, AUG, PP2000, P90. M4A1 from MW2 is pretty good too, I can aim for the head with them really fast, but sometimes it's hard to track moving targets.

And it's not an iron sight, but I love the SUSAT, I wish I could have it on all weapons instead of the ACOG.