MGAfter War

GX-9901-DX Gundam Double X

A 2015 MG that still makes the twin satellite cannons feel like the main event.

MechaGrade Score

4.2/5

Gundam Double X · 1/100 · 2015

GradeMG

Scale1/100

Released2015

Runnersn/a

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The verdict

This is one of those MGs that earns its reputation the honest way, through good engineering rather than hype.

The inner frame shared with the older MG Gundam X carries over well, color separation is strong enough that the stickers feel like a bonus rather than a crutch, and the twin satellite cannon deployment is genuinely satisfying to click into firing position. My one real gripe is the waist, which I will get to, but it does not sink the kit.

Best for: Builders who already like After War Gundam X or want an MG with a real transformation gimmick baked into the pose

The full review

What it is

The Double X is built on the same internal skeleton as Bandai's earlier MG Gundam X, so if you have built that kit before, the limb assembly and joint logic will feel familiar. What is new here is the backpack and the reflector unit system for the Twin Satellite Cannons, and Bandai clearly spent the engineering budget there. Swinging the twin barrels from stored position into firing mode, spreading the mirror sheet reflectors, and locking the whole assembly into place feels like a mini transformation sequence rather than a static accessory swap. The gold and white color separation on the torso and skirt panels comes almost entirely from molded plastic, which is exactly what I want from a kit at this price point.

The catch

The waist is the weak link. The backpack and cannon assembly are heavy enough that the torso wants to tip backward once you attach everything, and the waist joint alone is not built to fight that leverage. Plan on an action base if you want to display any dynamic firing pose, because standing it flat-footed with the cannons deployed will slowly lean the whole figure back over time. Leg joints can also pop loose during aggressive posing, a known quirk builders have flagged since release. None of this is a build-quality failure, it is a physics problem Bandai never fully solved for this silhouette.

Who it's for

If you already have a soft spot for Gundam X or Double X specifically, this kit rewards that loyalty with real engineering care and a satisfying gimmick, and I would tell you to buy it without hesitation. If you are newer to MGs and just want the smoothest first build, I would steer you toward a kit with a lighter backpack and less top-heavy engineering, since you will need an action base here to get the most dramatic poses to hold. Fans of the satellite cannon lore specifically should not skip this one, the deployed mode alone justifies the shelf space.

The build story

What the build is actually like, and the engineering worth knowing about.

Runner cleanup and gate placement follow Bandai's usual MG-era standards from this period, nothing unusually fiddly, though the reflector unit sheets for the satellite cannons need careful handling since they are thin and meant to simulate mirrored surfaces rather than take rough handling.

The standout engineering is the backpack conversion sequence for the Twin Satellite Cannon, going from stored travel mode to full firing spread with the mirror reflectors extended. Accessory loadout includes the buster rifle, shield, and beam sabers, and part count delivers real value for an MG in this price band even before you factor in the transformation gimmick.

Lore & trivia

01The Double X was built by the New UNE in AW 0015 using salvaged parts from Jamil Neate's original Gundam X, which is why it inherits that unit's frame and Satellite System compatibility.
02Because it carries Jamil's imprinted brainwave data from the original Gundam X, the Double X can fire its Twin Satellite Cannon without needing a Newtype pilot, unlike the original Gundam X which required Tiffa's help.
03The single-barrel Satellite Cannon on the original Gundam X was upgraded into a two-barrel Twin Satellite Cannon on the Double X, multiplying its output well beyond the original unit's firepower.
04This MG shares its core internal frame with Bandai's earlier MG Gundam X release, making the Double X effectively a frame reuse with a new backpack and reflector system built around it.