From Mobile Suit Gundam: The Witch from Mercury, this Expansion Parts Set is designed to complement the MSJ-105 Demi Trainer units seen throughout the series. Reflecting the modular philosophy behind training and support mobile suits, the additional equipment allows the Demi Trainer to be configured for different operational roles while maintaining its practical, utilitarian identity.
The HG Demi Trainer Expansion Parts Set offers a straightforward build experience focused on compatibility and ease of assembly. Parts are molded with clean separation and are designed to attach directly to existing HG Demi Trainer kits without modification. The build flow is simple and intuitive, making this set accessible even for less experienced builders while still adding meaningful visual variation.
What builders tend to appreciate most is the flexibility this set provides. The additional weapons and optional equipment allow for multiple display configurations, adding presence and personality to the base kit. Whether used to create a heavier support-style Demi Trainer or simply to vary poses and loadouts, this expansion set delivers practical customization that fits naturally within the HG Witch from Mercury lineup.
Included Accessories
Optional Backpack Unit ×1
Optional Shoulder Armor ×1
Heavy Weapon Parts ×1 set
Connection / Adapter Parts ×1 set
Decal Sheet ×1
General Specifications
| Manufacturer | Bandai |
| Kit Grade | High Grade (HG) |
| Model | Demi Trainer Expansion Parts |
| Anime Appearance | Mobile Suit Gundam: The Witch from Mercury |
| Finished Height | — (Option Parts Set) |
| Parts Count | Low to Medium |
| Recommended Skill Level ** | Beginner to Intermediate |
| Estimated Build Time * | Approx. 1–2 hours |
| Box Dimensions | Approx. 30 × 19 × 6 cm |
| JAN | 4573102633576 |
Notes
* Estimated build time is based on parts count, kit grade, and in some cases Mecha Universe staff build experience. It is provided as a general reference only and should not be considered an absolute value.
** All kits share the same fundamental assembly principles and difficulty level. However, depending on the number of parts, part size, and overall complexity, some kits may be more comfortable for beginner, intermediate, or advanced modelers. This classification is provided solely as a guidance indicator based on Mecha Universe staff experience. Beginners can start with any kit, including more complex releases.
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