Is the XM 312 still in research or production? It is said it will replace the M2 is this true?[/img]

I don't know if you've found the answer yet but I'll go ahead and answer anyway.

The XM312 is designed to replace the Ma Deuce and is being kicked out while it's air bursting brother the XM306(?) is still stuck in R&D. By the end of 2005 our boys might start to get the XM312 in their hands.