Marcus Beer, NL's main PR dude in US, writes:
"...
The weapons that were used by 10th Mountain, Task Force Ranger and Delta during Op Restore Hope will be the ones in the game.
The 'whats in, whats not' list was supplied by our three Subject Matter Experts. Two of the three were in Mog and were members of TFR and SFOD, and the third was a member of SFOD who specialised in weapons and sniping...
The full list will be made available soon... I promise
Hope this helps
Marcus"
Source:
DF3.net