Vojnik:

Kaur, I understand the "3 rds in 18" at 500m" concept, but that seems like that's not quite the point of a squad suppressive weapon. I thought a "machine gun" was supposed to provide a beaten zone of fire in order to kill/injure within that beaten zone, to provide sustained or cyclic grazing fire in the defensive, or to suppress the enemy to allow fire and maneuver.
The question is what makes suppression effect. I think that this is threat to be killed. This is related to precision. IAR is very precise according to comments. IAR is good suppression weapon then

jcustis:
The IAR holds better minute of angle accuracy that the M16A4 does, and in fact reportedly shoots better than the DM rifles that were built out of M16A4s, specifically for a DM role.
I have been thinking also isn't there identity crisis in the heads of squad DM's? Do IAR people and DM people participate same courses now?