Builder Parts

For those who love assembling Gunpla, Bandai Builder Parts at P-Rex Hobby are the accessories you need to improve your model kits further. These amazing quality plastic accessories and effect parts kits will definitely improve the details and customization of your Gunpla models. Buy Bandai Builder Parts online; there are wide selections for advanced modelers and starters.

History:Bandai

Founded in 1950, Bandai transitioned from distributing toys to producing high-precision plastic model kits, launching Gunpla in 1980 and pioneering snap-fit engineering. In 2011, the Builders Parts line debuted System Weapon, System Base, and HD accessory kits designed for 1/144 and 1/100 Gundam models. Manufactured in China and Vietnam with later items under Bandai Spirits’ branding, these parts remain widely available via P‑Rex Hobby, Gundam‑Planet, HobbyTown, and international retailers.

A Variety of Categories to Choose From

The Bandai Builder parts are divided into three major sections: System Weapon, System Base, and Builders Parts. Each category has unique components that can be used to upgrade or even personalize your models. The System Weapon series includes 1/144 weapons with more detail than the generic Gunpla kits. You can customize it to your ideal configuration, which enables you to have genuinely original work. System Base offers bases for displaying your models and some extra hand parts, perfect for assembling your masterpiece. Builders Parts offers many high-definition parts, like hands, verniers, and other accessories, to put on topmost and elaborate details to your models.

Compatibility and Versatility

Bandai hobby builders parts online are compatible with multiple scales of Gunpla kits. The most parts would be made in 1/144 scale and, hence, compatible with both High Grades and Real Grades. Except for some of the parts designed to be non-scaled or 1/100th scale, the parts are overwhelmingly interchangeable in building the look of your choice.

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High-Quality Construction

Besides functionality, buying Bandai builder parts online is popular because of their high construction quality. Made from durable plastic, these parts have been designed to withstand the rigors of model building and provide a long-lasting finish. The detail level ensured in every part speaks of spectacular work from the development team. Bandai Builder Parts would improve weapons or just the general look of your Gundam model. There are innumerable options, and these items' quality of manufacture will take your Gunpla experience to new heights.

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Frequently Asked Questions 

What are Bandai Builder Parts?
Builder Parts are official Bandai accessories designed to enhance Gundam plastic models (Gunpla). They include hands, weapons, joints, thrusters, antennas, bases, and effect parts compatible with High Grade (1/144) and Master Grade (1/100) kits.

Do Builder Parts require glue or paint?
No glue is required these parts snap-fit like standard Gunpla kits. They are molded in color, but painting is optional for added realism or customization.

What scales are supported?
Most Builder Parts are made for:

HG (1/144 scale)
MG (1/100 scale)
Some may fit Real Grade or custom projects depending on the part.

Can I use these parts on non-Gundam kits?
Yes, with some modification. Builder Parts can be used creatively on custom builds or other model kits, as long as the size and pegs fit or are adjusted.

Are Builder Parts pre-assembled?
No. Like Gunpla, the parts come on runners and must be cut out and assembled. Some sets include multiple configuration options (e.g., different hand poses or weapon heads).

Where can I buy Bandai Builder Parts?
You can purchase genuine Builder Parts directly from P-Rex Hobby, Amiami and HobbyLink Japan.