Give the troops something that works. .223 in Afghanistan is pretty worthless.
What about this from Bushmaster. $4900. Ten rounds .50 BMG but it says bolt action. The Barrett I think is semi-auto.
http://www.bushmaster.com/catalog_military_BCW3M_22-50BMGLW.asp
Weighs almost as much as the Barrett which is what they were trying to get away from.