whoa, cease fire their golly,,,,ALL u.s Marines "must" qualify by hitting targets with iron sites on the M-16 at 500 yards. one of the main issues for the continuing battle in Al-Anbar is the Marines sitting about 400 to 500 yards out of urban areas and hitting insurgents at that range. BUUUT on the flip side u.s forces hate the fact that the round just does not have a great deal of knock down power. Many of the Insurgents "Jack" themselves up on various narcotics and are at times that much harder to kill. My favorit is the M-4 a little tricked out as I have fired various AK's and think their inaccurat as hell at more than 100 yards.....cheers ute.