We were issued 60 rds of ammo to carry on base and 240 rounds for trips to Afghanistan. I carried a 30 rd clip in each side pocket. The MPs were constantly having negligent discharges inside the wire :o If you were on perimeter guard duty you were locked and loaded. When you went into the chow hall you had a barrel to clear weapons. Had a few folks that made some noise in that...lol.
The contract for the 6mm ARC has been awarded to Barrett Rifles nothing secret about it. This will not be a standard issue item. It might be something that is issued to Designated Marksmen.