A guy at work ( former USMC maybe) claims that the course of fire for the USMC boot camp is out to 700 meters iron sights. That seems a little far for irons. I was looking around online and found this
http://www.usmcweapons.com/the-m16a2...cation-course/

Is this the normal course of fire? and has it been the same for a while? He said he was in around 1992-1993, and a lot of his stories seem to be BS Like carrying a .45 acp Beretta 92F. and A lot of his time frames don't seem to match up.