James' new weapons:

M40A3 Sniper Rifle (Appeared in Chapter Three, appears in Chapter Four and Six. Replaces his M4 in a Long-Range Situation.)

M82A3 Barrett 50. BMG (For Anti-Materiel Purposes)

Both will appear in "Chapter Four: THE RESCUE" used by James, covering Enterprise and also in the range.

Nathan's new weapons:

MK11 Mod 0 (Used only in the shooting range in Chapter Five.)

M240B GPMG (Upgrade to his M27 IAR in an MG Fireteam)