HG Model Kit Missing Parts: What to Do and How to Source Replacements

Quick answer

If your HG model kit is missing parts, first confirm the part is truly absent and not still attached to a runner or hidden in the bag. Then file a bandai replacement parts request through Bandai's official support channel with your receipt and the exact part number from the manual. If the kit is out of production or you bought it secondhand, turn to a trusted spare-parts seller or a compatible donor kit instead.

Confirm the part is actually missing before you contact anyone

Before you assume a runner is missing, lay out every plastic bag on a clean, well-lit surface and check each runner against the parts map in the manual. Small parts can stay trapped in a corner of the bag, and a runner you think is gone may be tucked behind a larger one. If you already started building, check your cutting mat, the floor around your workspace, and the inside of your nippers' protective cap — tiny polycaps and V-fin tips love those spots. Only after a full inventory should you treat it as a genuine model kit missing runner case.

File a Bandai replacement parts request the right way

Bandai's official replacement service generally requires proof of purchase, the kit's product code, and the specific part number from the manual. For the Bandai MG 1/100 Gundam Deathscythe EW, for example, the product code is 5062841 — you'll need that when you submit a request. Keep your receipt or order confirmation handy, since most support teams ask for it to verify the kit is within the eligible window. If you bought from a local retailer, ask them first; they may handle the claim for you or point you to the regional distributor. If the kit is a special order or limited release, note that replacement part availability can be slower or unavailable, so ask before assuming it will be covered.

Source spare gunpla parts when official channels aren't an option

Vintage, discontinued, or secondhand kits often fall outside official replacement programs. In that case, look for reputable spare-parts sellers who specialize in runners and single parts, or join a builder community where members trade leftovers. Another practical route is a compatible donor kit: many HG kits share runners or weapon sprues with variants from the same timeline. If you only need a weapon or accessory, a dedicated accessory set can solve the problem without hunting down a full kit. For example, the Premium Bandai RG 1/144 Weapon Set for RX-78-2 Gundam Ver.2.0 adds armament options to that specific Real Grade kit, but it is not a general spare-parts solution for every HG build — check compatibility before buying.

When to stop hunting and choose another path

If the missing part is a large armor piece, a unique clear part, or a polycap that holds a joint together, a donor kit or scratch-building may cost more than the kit is worth. Set a limit: if you can't find the part within a reasonable time or for a sensible price, consider whether a replacement kit or a different build makes more sense. For limited releases like the Bandai Gundam Base Limited RG 1/144 Hi-Nu GUNDAM Titanium Finish, replacement parts are especially hard to source because the finish is specialized and the kit is a special order. In those cases, treating the kit as a display piece with a minor omission or using it for practice may be the better call.

Diagnosis: missing part vs. missing runner vs. lost part

• Symptom: one small part is gone, runner is complete: You've checked the runner and the part was either cut off and lost during building or never molded on the runner. Cause: lost during assembly or a rare molding short shot. Action: search your workspace and floor, then check the manual for the part number and request a single replacement if eligible. If the kit is new and within the replacement window, file a request with the part number. If not, look for a donor runner or spare part seller.
• Symptom: an entire runner is absent from the box: The parts map in the manual lists a runner that isn't in any bag. Cause: packaging error or the kit was opened before you received it. Action: contact the retailer immediately with photos of the box contents and your receipt. They may replace the whole kit or file a claim with Bandai. Do this before you start building — once parts are cut, proving a runner was missing becomes much harder.
• Symptom: part broke or was lost after assembly began: The part existed but is now broken or misplaced. Cause: accidental damage or misplacement during building. Action: official replacement programs usually don't cover builder-caused loss, so source a spare from a donor kit, a parts seller, or repair the part if possible. If the part is structural, a repair may be stronger than a replacement. If cosmetic, consider whether it's visible enough to matter.

Products mentioned in this guide

• Bandai MG 1/100 Gundam Deathscythe EW: Bandai MG 1/100 Gundam Deathscythe EW is a Master Grade kit from the Regular Bandai Releases line with product code 5062841. If you need to file a replacement parts request, having the exact product code ready speeds up the process and helps support identify the kit.
• Premium Bandai RG 1/144 WEAPON SET for RX-78-2 GUNDAM Ver.2.0: Premium Bandai RG 1/144 Weapon Set for RX-78-2 Gundam Ver.2.0 is an accessory kit designed for the Real Grade line and compatible with the RX-78-2 Gundam Ver.2.0 model kit. It can replace missing or add new weapon parts for that specific kit, but it is not a universal spare-parts source for every HG or RG build.
• Bandai Gundam Base Limited RG 1/144 Hi-Nu GUNDAM Titanium Finish: Bandai Gundam Base Limited RG 1/144 Hi-Nu GUNDAM Titanium Finish is a special order kit requiring 6–8 weeks and features a titanium finish coating. Limited and special-order kits often have restricted replacement part availability, so plan ahead and treat missing parts as a higher-risk situation.