Fusil d'Assaut de la Manufacture d'Armes de Saint-Étienne (FAMAS) manufactured by the French state owned Manufacture d'Armes de Saint-Étienne (MAS). Called Le Clairon (The Bugle) by French troops, this example features white and teal(?) furniture that can be done at the manufacturer level provided enough weapons are ordered to be profitable. A much easier and likely option would be to have the metal parts Cerakoted and the polymer parts painted or decaled.
Additional edit; regarding exact make: The FAMAS is available in two basic flavors the F1 and the later devolped G2. The G2 was accepted by the French Navy and the French Army has accepted limited quantities. It would be difficult to say which of the two Asuna is holding here because the FAMAS illustrated appears to both have features of both rifles as well as missing (minor) features of both rifles. As well as appearing to be missing a trigger assembly. There is a small black widge illustrated just forward of the trigger area extending to Asuna's left wrist that I do not believe is intended.