More in-depth comparison here:
Not to mention the possibility of any of hundreds of third-party mods, Fulton Armory, etc.
Notice who supplied the pic of the two snipers to the Medal of Honor page I posted above? Lee Van Arsdale. Another 'Delta guy' (no, really) who was there 'that day', and was also the consultant to the movie. http://www.imdb.com/name/nm1388339/?...g__;fc=1;ft=20