Bandai Unveils METAL BUILD Hi-ν Gundam Heavy Weapon System Option Set

METAL BUILD Hi ν Gundam Dedicated HWS Option Set 0

Bandai has announced the release of a massive new “Heavy Weapon System Option Set” and an accompanying armament expansion for the popular “METAL BUILD EXPO Hi-ν Gundam”.

The “METAL BUILD Hi-ν Gundam Dedicated HWS Option Set” and the “Hyper Mega Bazooka Launcher  [METAL BUILD EXPO]“ are set to allow fans to upgrade their existing setups.

METAL BUILD Hi ν Gundam Dedicated HWS Option Set 1

The Hi-ν Gundam design famously originates from Mobile Suit Gundam: Beltorchika’s Children, a 1988 novel penned by series creator Yoshiyuki Tomino.

Mobile Suit Gundam Char's Counterattack Beltorchika's Children

This alternate retelling of the Char’s Counterattack storyline introduced readers to uniquely bulked up mobile suit designs that have since become incredibly sought after by mecha enthusiasts.

Mobile Suit Gundam Chars Counterattack

Bandai’s high-end METAL BUILD line is renowned for recreating these legendary machines with striking internal metal frames and sharp aesthetics.

METALBUILD logo

The new heavy armor upgrade features intricate deployment gimmicks across various sections and additional thrusters to create a truly imposing silhouette.

METAL BUILD Hi ν Gundam Dedicated HWS Option Set 4
metal build v gundam heavy set

Also available at the same time is the “METAL BUILD Hyper Mega Bazooka Launcher [METAL BUILD EXPO]”, which brings back a highly praised super large weapon with refined coloring to perfectly match the recent METAL BUILD EXPO exclusive Hi-ν Gundam.

METAL BUILD Hi ν Gundam [METAL BUILD EXPO] 5

The energy cable, which is described as a tube in the original novel, has also been appropriately thickened to give it a much stronger visual presence when connected to the mobile suit.

METAL BUILD Hyper Mega Bazooka Launcher [METAL BUILD EXPO]1

Let’s take a look at the full details for the new expansion accessories!

  • METAL BUILD Hi-ν Gundam Dedicated HWS Option Set
    • Price: 19,800 yen (approx. $128 USD / £102 GBP)
METAL BUILD Hi ν Gundam Dedicated HWS Option Set 3

This heavy armor package utilizes both ABS and die-cast materials, featuring a High Mega Shield that measures approximately 22 cm in length.

METAL BUILD Hi ν Gundam Dedicated HWS Option Set 2
METAL BUILD Hi ν Gundam Dedicated HWS Option Set 5

The set includes the full HWS armor layout, two beam saber hilts, a dedicated side skirt arm, and auxiliary support parts.

METAL BUILD Hi ν Gundam Dedicated HWS Option Set 6
  • METAL BUILD Hyper Mega Bazooka Launcher [METAL BUILD EXPO]
    • Price: 17,600 yen (approx. $114 USD / £91 GBP)
METAL BUILD Hyper Mega Bazooka Launcher [METAL BUILD EXPO] 4
METAL BUILD Hyper Mega Bazooka Launcher [METAL BUILD EXPO] 5

This ABS constructed weapon measures roughly 42 cm in its diffuse firing mode and extends to an impressive 45 cm when transformed into its convergent firing mode.

METAL BUILD Hyper Mega Bazooka Launcher [METAL BUILD EXPO] 2
METAL BUILD Hyper Mega Bazooka Launcher [METAL BUILD EXPO] 7
METAL BUILD Hyper Mega Bazooka Launcher [METAL BUILD EXPO] 9

The set includes the main launcher, an energy cable, a battery pack, and a dedicated display base.

METAL BUILD Hyper Mega Bazooka Launcher [METAL BUILD EXPO] 6
METAL BUILD Hyper Mega Bazooka Launcher [METAL BUILD EXPO] 8
METAL BUILD Hyper Mega Bazooka Launcher [METAL BUILD EXPO] 10

Both accessories are scheduled to begin shipping sequentially in November 2026.

METAL BUILD Hyper Mega Bazooka Launcher [METAL BUILD EXPO] 3

Pre-orders for both expansion kits will open exclusively via Premium Bandai on Thursday, May 7, 2026.

The HWS Option Set will become available first at 16:00 JST, followed closely by the Hyper Mega Bazooka Launcher at 17:00 JST.

This post may contain affiliate links, and Essential Japan may earn a commission if you purchase through them.

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