This is the Bandai 1/144 HGUC MS-06S Zaku II [5060453].

Bandai's HG kit of Char Azanable's famous Zaku II in his iconic Red Comet colors includes a new set of emblems for its shoulder armor and shoulder shield! A new emblem for its shoulder armor is also included, identifying it as affiliated with the Falmer Corps. It's armed with its 120mm machine gun and plenty of other weapons, too! Parts are molded in color, including stickers for markings.

Includes:

• Machine gun
• Belt-feeding machine gun
• Bazooka
• Spare magazine for bazooka
• Rifle
• Heat hawk (active mode)
• Heat hawk (storage mode)
• Weapon hand (right)
• Fists (left & right)
• Foil sticker
• Marking sticker