Builder Parts

Builder parts are customization parts sold on their own for kitbashing mecha and figure kits: weapons, armor, hands, joints and decoration parts. The two biggest systems here are Kotobukiya's M.S.G and Bandai's Builders Parts HD, alongside Bandai's 30 Minutes option parts.

What you will find here

• M.S.G Weapon Unit and Heavy Weapon Unit — rifles, bazookas, blades and railguns.
• M.S.G Mecha Supply — joint sets and expansion armor.
• Builders Parts HD — 1/144 MS hands, armor, marine parts and emblem reliefs.
• Option Parts Set Gunpla — numbered Gunpla option sets.
• 30MS / 30MM option parts and Customize Material — see also Model Kit Accessories.

FAQ

What is kitbashing?

Building a design the manufacturer never released by combining parts from different kits. Parts sold separately, like the ones here, make it easier.

Detail parts for scale models are in Detail-Up Parts. Browse everything in Accessories.

How long does shipping to the US take?

Orders are processed in 1–5 business days, then arrive in 2–8 business days after dispatch. US orders ship duties prepaid.

P-Rex Hobby is a Bandai Recommended Hobby Store. Everything we sell is genuine, officially licensed product, and US orders ship duties prepaid with no import fees.