Sapper, the C7 bolt ain't got nothin' on the .50's bolt. That thing should have a manual of its own.
As for all the kiddies who badmouth the C7 without having fired it... well, you're simple. Can't rephrase that to make it sound any nicer. Sorry.
The only ***** is the barrel could stand to be a few inches shorter, a multi-position stock would be nice, and having a rail system would be better than guntaping **** like maglights on the handguards. And the C79 sight should be taken out back and put out of its misery. In essense, a heavy barrel C8 with a RAS and ACOG on it would be just the ticket IMO. Add an M14 or two in at the platoon level for DM purposes and you're laughing.
And there's no sense in switching to some experiemental caliber when 5.56 is the NATO standard and is battle proven. Of all the things the Army needs, ******* around in selcting a new rifle is not one of those.