who actually uses these fancy guns? special forces?
Marines most likely, and it's not going to take the place of any standard rifles in iraq. probably just one man per squad, unit or whatever with one in a backpack. this isn't GRAW, you're not going to have an endless supply of disposable exotic weapons... think "Sniper for delicate situations like shooting a bullet through an entire iraqi town just to blow the asshole clean out of a terrorists body." and you've got a rough idea.

(those are tears of joy)