What is on this rifle? Pic inside

Can any one take a look at the black box in front of his aimpoint and tell me what that is?

Link:
https://gko.ngb.army.mil/Login/Images/IMG0107.jpg
https://gko.ngb.army.mil/Login/Images/IMG0107.jpg


Some one i asked thought it may have been miles gear (Armys laser tag training equipment)

but the excerpt under it :
"Staff Sgt. Charles Houck and Spc. Tom Blalock, from the 98th Cavalry Regiment, 155th Brigade Combat Team, search for insurgents near Al Tunis, Iraq, after their fellow Soldiers and Marines were attacked. This photo appeared on www.army.mil."

1 of these maybe?

http://www.defensereview.com/modules...rticle&sid=700

actually i think it might be an AN/PEQ-2, the only sites i am finding are airsoft crap.

right, looks to me like the PEQ-2's we used to use (that or the equivalent) (IR laser aiming device)

they're pretty bad ass on night ops with NVG's (of course)

MILES gear usually mounts in front of the front sight post.

thank you... it does look like th the AN PEQ-2, i believe that you are right:
http://en.wikipedia.org/wiki/AN/PEQ-2

I don't know which model, but it is an IR Laser. Karl.