US Army Considers Adopting an Interim Battle Rifle in 7.62NATO: eventually adopt 6.5

[stanc]

What I read into this is that the 7.62x51 weapons would be in BCT units (combat -- infantry brigades). The rest of the Army would still have the M4 and M249

Yes, that's my take on it, too.

P.S. There was a discussion on arfcom about a week ago, in which one poster claims to have heard that the plan has recently been expanded to completely replacing the M4 throughout the Army. However, he provided no substantiation for that idea.