It may turn out to be a "upgrade" M25 version. It could be that any machinegun would be on a crew served mobile platform ( where extra barrels/ammo can be stored) Anything out in the windy desert that will beat the 77gr 5.56 would be nice. In town, I just don't see anything beating the M4. We shall see! I "prefer" a drone, robot or any "standoff" weapon be used...our troops are too precious for most fights.
