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Bandai
30MS OPTION BODY PARTS SIGMA SISTERS PARADOX 1 [COLOR A]
Sale price$36.00 CAD
$30.60 CAD at checkout
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KOTOBUKIYA MECHA SUPPLY20 JOINT SET Type D GUNMETALLIC Ver.
Sale price$24.00 CAD
$20.40 CAD at checkout
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KOTOBUKIYA WEAPON UNIT06 SAMURAI MASTER SWORD
Sale price$20.00 CAD
$17.00 CAD at checkout
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KOTOBUKIYA MECHA SUPPLY04 PROPELLANT TANK Type ROUND
Sale price$20.00 CAD
$17.00 CAD at checkout
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KOTOBUKIYA WEAPON UNIT39 MULTIPLE GUN
Sale price$16.00 CAD
$13.60 CAD at checkout
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KOTOBUKIYA
HEAVY WEAPON UNIT41 MODULAR CARBINE
Sale price$27.00 CAD
$22.95 CAD at checkout
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Bandai
OPTION PARTS SET GUNPLA 12 (LARGE RAILGUN)
Sale price$12.00 CAD
$10.20 CAD at checkout
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Bandai
OPTION PARTS SET GUNPLA 11 (SMOOTHBORE GUN FOR BARBATOS)
Sale price$12.00 CAD
$10.20 CAD at checkout
In StockSave 19%
Bandai
OPTION PARTS SET GUNPLA 10 (GALAXY BOOSTER)
Sale price$13.00 CAD Regular price$16.00 CAD
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Bandai
OPTION PARTS SET GUNPLA 09 (GIANT GATLING)
Sale price$12.00 CAD
$10.20 CAD at checkout
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Bandai
OPTION PARTS SET GUNPLA 07 (POWERED ARMS POWEREDER)
Sale price$12.00 CAD
$10.20 CAD at checkout
In StockSave 15%
Bandai
OPTION PARTS SET GUNPLA 08 (BALLDEN ARM ARMS)
Sale price$13.60 CAD Regular price$16.00 CAD
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Bandai
OPTION PARTS SET GUNPLA 06 (VALUABLE POD)
Sale price$16.00 CAD
$13.60 CAD at checkout
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Bandai
OPTION PARTS SET GUNPLA 05 (UNIVERSE BOOSTER PLAVSKY POWER GATE)
Sale price$16.00 CAD
$13.60 CAD at checkout
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KOTOBUKIYA
MECHA SUPPLY21 JOINT SET Type E GUNMETALLIC Ver.
Sale price$20.00 CAD
$17.00 CAD at checkout
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Bandai
30MS OPTION BODY PARTS ARM PARTS & LEG PARTS [BROWN]
Sale price$28.00 CAD
$23.80 CAD at checkout
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Bandai
30MS OPTION BODY PARTS BEYOND THE BLUE SKY 1 [COLOR C]
Sale price$37.00 CAD
$31.45 CAD at checkout
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Bandai
30MM OPTION PARTS SET ARMORED CORE Ⅵ FIRES OF RUBICON WEAPON SET 01
Sale price$27.00 CAD
$22.95 CAD at checkout
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Bandai
CUSTOMIZE MATERIAL (DECORATION PARTS 1 GRAY)
Sale price$12.00 CAD
$10.20 CAD at checkout
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Bandai
CUSTOMIZE MATERIAL (DECORATION PARTS 1 WHITE)
Sale price$11.00 CAD
$9.35 CAD at checkout
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Bandai
CUSTOMIZE WEAPONS (HEAVY WEAPON 2)
Sale price$19.00 CAD
$16.15 CAD at checkout
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Bandai
30MS OPTION BODY PARTS TYPE MD01 [COLOR A]
Sale price$28.00 CAD
$23.80 CAD at checkout
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Bandai
30MS OPTION PARTS SET 13 (TACTICAL COSTUME) [COLOR B]
Sale price$27.00 CAD
$22.95 CAD at checkout
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Bandai
30MS OPTION HAIR STYLE PARTS Vol.10 ALL 4 TYPES
Sale price$40.00 CAD
$34.00 CAD at checkout
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Accessories
Builders Parts - HD MS Panel 01
Sale price$13.00 CAD
$11.05 CAD at checkout
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Accessories
Builders Parts - HD 1/144 MS Effect 01
Sale price$11.00 CAD
$9.35 CAD at checkout
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Accessories
Builders Parts - HD 1/144 MS Hand 02 (ZEON)
Sale price$13.00 CAD
$11.05 CAD at checkout
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Bandai
BUILDERS PARTS HD 1/144 MS GROUND 01
Sale price$13.00 CAD
$11.05 CAD at checkout
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KOTOBUKIYA
HEAVY WEAPON UNIT51 KNIGHT MASTER SWORD BLACK Ver.
Sale price$29.00 CAD
$24.65 CAD at checkout
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KOTOBUKIYA
HEAVY WEAPON UNIT47 GUN BLADE LANCE2 White Ver.
Sale price$24.00 CAD
$20.40 CAD at checkout
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KOTOBUKIYA
HEAVY WEAPON UNIT46 GUN BLADE LANCE2
Sale price$24.00 CAD
$20.40 CAD at checkout
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Accessories
KOTOBUKIYA WEAPON UNIT05 LIVE AXE
Sale price$20.00 CAD
$17.00 CAD at checkout
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KOTOBUKIYA WEAPON UNIT42 FOLDING ARM
Sale price$22.00 CAD
$18.70 CAD at checkout
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Accessories
KOTOBUKIYA WEAPON UNIT41 BALLISTIC SHIELD
Sale price$12.00 CAD
$10.20 CAD at checkout
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KOTOBUKIYA
HEAVY WEAPON UNIT49 MEGA SLASH EDGE 2 White Ver.
Sale price$27.00 CAD
$22.95 CAD at checkout
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KOTOBUKIYA
HEAVY WEAPON UNIT48 MEGA SLASH EDGE 2
Sale price$27.00 CAD
$22.95 CAD at checkout
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Accessories
KOTOBUKIYA WEAPON UNIT47 JAPANESE SWORD2
Sale price$26.00 CAD
$22.10 CAD at checkout
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Accessories
KOTOBUKIYA WEAPON UNIT46 BAMBOO SWORD & WOODEN SWORD
Sale price$20.00 CAD
$17.00 CAD at checkout
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KOTOBUKIYA
HEAVY WEAPON UNIT24 ALNAIR ROD
Sale price$33.00 CAD
$28.05 CAD at checkout
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Bandai
OPTION PARTS SET GUNPLA 03 (BUILD HANDS EDGE)
Sale price$12.00 CAD
$10.20 CAD at checkout
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Bandai
OPTION PARTS SET GUNPLA 04 (BUILD HANDS ROUND)
Sale price$12.00 CAD
$10.20 CAD at checkout
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Bandai
30MM 1/144 OPTION PARTS SET 16 (ARM UNIT/LEG UNIT 1)
Sale price$17.00 CAD
$14.45 CAD at checkout
In StockSave 27%
Bandai
OPTION PARTS SET GUNPLA 01 (AILE STRIKER)
Sale price$16.00 CAD Regular price$22.00 CAD
In StockSave 27%
Bandai
OPTION PARTS SET GUNPLA 02 (LAUNCHER STRIKER & SWORD STRIKER)
Sale price$16.00 CAD Regular price$22.00 CAD
In Stock
KOTOBUKIYA
MECHA SUPPLY11 JOINT SET Type C
Sale price$22.00 CAD
$18.70 CAD at checkout
In Stock
KOTOBUKIYA
HEAVY WEAPON UNIT09 VORTEX DRIVER
Sale price$24.00 CAD
$20.40 CAD at checkout
In Stock
Bandai
30MS OPTION HAIR STYLE PARTS Vol.7 ALL 4 TYPES
Sale price$40.00 CAD
$34.00 CAD at checkout
In Stock
Bandai
30MS OPTION HAIR STYLE PARTS Vol.6 ALL 4 TYPES
Sale price$40.00 CAD
$34.00 CAD at checkout

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.

Recommended YouTube Videos

1. BANDAI Hobby Builders Parts - HD 1/144 MS Figure 01

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.

Shop P-Rex Hobby Collection Today!

Discover an incredible selection of premium collectibles at P-Rex Hobby! Shop exclusive Bandai vendor items, including P-BandaiGundamSoul of ChogokinRobot Spirits, and S.H. Figuarts. Whether you're a fan of iconic franchises like Star WarsOne Piece, or Pokémon or looking for high-quality model kits like Figure-rise and 30MM, P-Rex Hobby has something for every enthusiast. Explore figures, statues, and limited edition pieces, all from renowned brands like BanprestoS.H. MonsterArts, and Ichibansho. Elevate your collection today with unique offerings from P-Rex Hobby!

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.