The Mobile Suit Option Set 4 & Union Mobile Worker set is a 1/144 scale High Grade IRON-BLOODED ARMS add-on kit released in 2016.


  • Booster unit
  • Battle Blade
  • Union Mobile Worker

Kit Features & Gimmicks

  • The Booster unit is compatible to HG Gundam Kimaris.
    • Booster parts are also poseable.
  • Battle Blade can be used for HGI-BO EB-06 Graze and it's variants excluding Graze Ein.

Tips & Tricks

  • Parts required to create the Graze Ground Type:
    • The hover units & backpack piece from the 9th Option Set
    • The Battle Blade
    • The Leg Boosters from Graze Ritter

Other Gunpla releases with the add-on kits



Stock Photos