User blog comment:Callofduty4/Modern Warfare 3 Weapon Proficiency and Equipment trailer/@comment-4025623-20111027200242/@comment-2239741-20111027234241

According to this very wiki, the FAMAS was seen with a French soldier. Also, the stock of a Vector can be seen on the back of a character in a Machinima screenshot. It is unclear whether it will appear in the final version of Modern Warfare 3, since it did not appear at the Call of Duty XP event.