“Build Booster” and “Build Booster Mk-II” are now available as a set! By combining two boosters, you can play a variety of customizations!
The Build Booster and Build Booster Mk-II can transform from a fighter to a backpack form.
The backpack form can be attached to various aircraft with various joints attached.
If you remove the parts of each part, you can use it as a weapon.
Parts other than weapons can also be customized to various GUNPLA models with the included joint parts.
Accessories
Build Booster ×1
Build Booster Mk-II×1
