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347 products
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Accessories
Builders Parts - HD 1/144 MS Vernier 01
Sale price$11.00 CAD
$9.35 CAD at checkout
Out of Stock
Accessories
Builders Parts - HD 1/144 MS Figure 01
Sale price$13.00 CAD
$11.05 CAD at checkout
In Stock
Bandai
BUILDERS PARTS HD MS CANNON 01
Sale price$11.00 CAD
$9.35 CAD at checkout
Out of Stock
Accessories
Builders Parts - HD 1/144 MS Hand 01 (E.F.S.F.)
Sale price$13.00 CAD
$11.05 CAD at checkout
Out of Stock
Accessories
Builders Parts - HD 1/100 MS Vernier 01
Sale price$13.00 CAD
$11.05 CAD at checkout
Out of Stock
Accessories
Builders Parts - HD 1/100 MS Hand 01 (E.F.S.F.)
Sale price$13.00 CAD
$11.05 CAD at checkout
In Stock
Bandai
BUILDERS PARTS HD MS VERNIER 02
Sale price$13.00 CAD
$11.05 CAD at checkout
In Stock
Bandai
30MS OPTION PARTS SET 10 (REAPER ARMOR)
Sale price$15.00 CAD
$12.75 CAD at checkout
In Stock
Bandai
30MS OPTION FACE PARTS FACIAL EXPRESSION SET 6 [COLOR C]
Sale price$24.00 CAD
$20.40 CAD at checkout
In Stock
Bandai
30MS OPTION FACE PARTS FACIAL EXPRESSION SET 5 [COLOR B]
Sale price$24.00 CAD
$20.40 CAD at checkout
In Stock
Bandai
BUILDERS PARTS HD 1/144 MS HAND 04 (E.F.S.F. large)
Sale price$11.00 CAD
$9.35 CAD at checkout
Out of Stock
Kotobukiya
Kotobukiya MSG Weapon Unit45 Missile & Rocket Pod
Sale price$26.00 CAD
$22.10 CAD at checkout
Out of Stock
Kotobukiya
Kotobukiya MSG Weapon Unit44 Heavy Machine Gun
Sale price$17.00 CAD
$14.45 CAD at checkout
Out of Stock
Model Kit Accessories
KOTOBUKIYA KOTOBUKIYA WEAPON UNIT 35 ENERGY SHIELD MODELING SUPPORT GOODS
Sale price$12.00 CAD
$10.20 CAD at checkout
Out of Stock
Kotobukiya
Kotobukiya MSG Weapon Unit Unit 21 Water Arms
Sale price$21.00 CAD
$17.85 CAD at checkout
Out of Stock
Kotobukiya
Kotobukiya MSG Weapon Unit 40 Multi Caliber
Sale price$11.00 CAD
$9.35 CAD at checkout
Out of Stock
Kotobukiya
Kotobukiya MSG Weapon Unit 37 Assault Rifle 2
Sale price$12.00 CAD
$10.20 CAD at checkout
Out of Stock
Kotobukiya
Kotobukiya MSG Weapon Unit 11 Trident Spear
Sale price$29.00 CAD
$24.65 CAD at checkout
Out of Stock
Kotobukiya
Kotobukiya MSG Weapon Unit 03 Folding Cannon
Sale price$25.00 CAD
$21.25 CAD at checkout
Out of Stock
Kotobukiya
Kotobukiya MSG Weapon Unit 028 Impact Edge
Sale price$13.00 CAD
$11.05 CAD at checkout
Out of Stock
Kotobukiya
Kotobukiya MSG Weapon Unit 01 Burst Rail Gun
Sale price$15.00 CAD
$12.75 CAD at checkout
Out of Stock
Kotobukiya
Kotobukiya MSG Weapon Unit 022 Rocket Launcher / Revolver Launcher
Sale price$11.00 CAD
$9.35 CAD at checkout
Out of Stock
Model Kit Accessories
KOTOBUKIYA WEAPON UNIT02 HAND BAZOOKA
Sale price$19.00 CAD
$16.15 CAD at checkout
Out of Stock
Kotobukiya
Kotobukiya MSG Series Mecha Supply10 Detail Cover Type A
Sale price$26.00 CAD
$22.10 CAD at checkout
Out of Stock
Kotobukiya
Kotobukiya MSG Mecha Supply22 Expansion Armor Typee
Sale price$24.00 CAD
$20.40 CAD at checkout
Out of Stock
Kotobukiya
Kotobukiya MSG Mecha Supply20 Joint Set Type D Gunmetallic Ver
Sale price$17.00 CAD
$14.45 CAD at checkout
Out of Stock
Kotobukiya
Kotobukiya MSG Mecha Supply Vectored Thruster A Detail Set
Sale price$24.00 CAD
$20.40 CAD at checkout
Out of Stock
Kotobukiya
Kotobukiya MSG Mecha Supply Radiate Fin A Detail Set
Sale price$19.00 CAD
$16.15 CAD at checkout
Out of Stock
Model Kit Accessories
Kotobukiya MSG Mecha Supply Assort 04 EX Armor Set, Gun Metal Ver.
Sale price$47.00 CAD
$39.95 CAD at checkout
Out of Stock
Kotobukiya
Kotobukiya MSG Mecha Supply 10 Detail Cover Type A
Sale price$19.00 CAD
$16.15 CAD at checkout
Out of Stock
Kotobukiya
Kotobukiya MSG Heavy Weapon Unit19 Solid Raptor
Sale price$29.00 CAD
$24.65 CAD at checkout
Out of Stock
Kotobukiya
Kotobukiya MSG Heavy Weapon Unit18 Raging Booster
Sale price$29.00 CAD
$24.65 CAD at checkout
Out of Stock
Kotobukiya
Kotobukiya MSG Heavy Weapon Unit 32 Gatling Gun2
Sale price$31.00 CAD
$26.35 CAD at checkout
Out of Stock
Accessories
KOTOBUKIYA HEAVY WEAPON UNIT30 ACTIVE MINE
Sale price$27.00 CAD
$22.95 CAD at checkout
Out of Stock
Kotobukiya
Kotobukiya MSG Heavy Weapon Unit 16 Overed Manipulator
Sale price$29.00 CAD
$24.65 CAD at checkout
Out of Stock
Kotobukiya
Kotobukiya MSG Heavy Weapon Unit 08 EX Battle Lance, Special edition Gold
Sale price$17.00 CAD
$14.45 CAD at checkout
Out of Stock
Model Kit Accessories
KOTOBUKIYA WEAPON UNIT43 EXCANNON
Sale price$16.00 CAD
$13.60 CAD at checkout
Out of Stock
Kotobukiya
Kotobukiya M.S.G Weapon Unit 30 Belt Link
Sale price$13.00 CAD
$11.05 CAD at checkout
Out of Stock
Kotobukiya
Kotobukiya M.S.G Weapon Unit 13 Chainsaw
Sale price$12.00 CAD
$10.20 CAD at checkout
Out of Stock
Kotobukiya
Kotobukiya M.S.G Series Weapon Unit17 Freestyle Gun
Sale price$20.00 CAD
$17.00 CAD at checkout
Out of Stock
Kotobukiya
Kotobukiya M.S.G Series Weapon Unit 09 New Sniper Rifle
Sale price$25.00 CAD
$21.25 CAD at checkout
Out of Stock
Kotobukiya
Kotobukiya M.S.G Series Mecha Supply07 Expansion Armor Type A
Sale price$24.00 CAD
$20.40 CAD at checkout
Out of Stock
Kotobukiya
Kotobukiya M.S.G Series Mecha Supply 25 Expansion Armor Type H
Sale price$34.00 CAD
$28.90 CAD at checkout
Out of Stock
Kotobukiya
Kotobukiya M.S.G Series Mecha Supply 17 Expansion Armor Type D
Sale price$26.00 CAD
$22.10 CAD at checkout
Out of Stock
Kotobukiya
Kotobukiya M.S.G Series Mecha Supply 04 Propellant Tank Type Round
Sale price$16.00 CAD
$13.60 CAD at checkout
In Stock
KOTOBUKIYA
HEAVY WEAPON UNIT27 DEMONIC ARM
Sale price$33.00 CAD
$28.05 CAD at checkout
Out of Stock
Model Kit Accessories
KOTOBUKIYA HEAVY WEAPON UNIT25 KNIGHT MASTER SWORD
Sale price$27.00 CAD
$22.95 CAD at checkout
Out of Stock
Kotobukiya
Kotobukiya M.S.G Series Heavy Weapon Unit 11 Killer ‎Beak
Sale price$27.00 CAD
$22.95 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.