MGUniversal Century

RX-78-3 Gundam G-3 Ver. 3.0

The best-engineered RX-78 frame Bandai has made, wearing the stealthy gray and violet coat of the test unit that started it all.

MechaGrade Score

4.2/5

Gundam G-3 · 1/100 · 2024

GradeMG

Scale1/100

Released2024

Runnersn/a

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The verdict

I think this is the most complete version of the original Gundam silhouette Bandai has ever put out, just recolored into something rarer and more interesting.

The Ver.3.0 inner frame under this thing is genuinely a joy to pose, with double-jointed elbows and knees and fingers that move individually. The G-3 colorway is what pulls me back to it though. Gray and light purple in place of the classic primaries reads like a suit meant to disappear into the field, and it makes a familiar shape feel new again on the shelf.

Best for: RX-78 fans who already know Ver.3.0 and want the rarer G-3 test-type colorway instead of another red-blue-yellow rebuild

The full review

What it is

This is the Ver.3.0 engineering, the same frame that's been Bandai's flagship take on the original Gundam silhouette for years now, dressed in the G-3 test unit's gray and violet livery instead of the standard tricolor. It was a Gundam Base exclusive release in September 2024, so it's aimed at people who already know what Ver.3.0 does and want it in a different coat. Building it feels like assembling a small, dense machine rather than snapping together toy parts. The Core Fighter still separates and docks into the chest as Core Block, the cockpit hatch opens on a tiny pilot figure, and the whole thing holds a stance the moment you're done with the last runner.

The catch

The Ver.3.0 frame has a known soft spot: the plastic in a lot of the small joints is on the softer side, and builders who pose this kit heavily over months report the elbows, knees, and hip joints loosening faster than you'd want on a kit this involved. It's not a kit for someone who wants to open the box and get an easy weeknight build either, the part count and the number of tiny articulated pieces (fingers, movable armor panels, the Core Fighter mechanism) make for a longer, more deliberate session. And because this is a Base-exclusive recolor rather than a mainline release, it's harder to find and usually costs more than a standard MG once it's out of stock.

Who it's for

If you've built an RX-78-2 Ver.3.0 already and loved the frame but want something less common on the shelf, this is exactly that kit. It also makes sense for anyone specifically chasing G-3 as a suit, since MG versions of the test-type Gundam don't come around often. I'd steer someone away from this as a first MG though. The part count, the fiddly small joints, and the premium price make it a kit to grow into rather than start with. Someone newer to MG builds is better served by a mainline Ver.3.0 or Ver.Ka kit first, then coming back to a Base exclusive like this one once they know they enjoy the format.

The build story

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

Assembly leans into the inner-frame-first Ver.3.0 method, so you're building a small articulated skeleton before any armor goes on, and every joint on that skeleton is doing real work. Gate placement is typical modern Bandai, mostly on non-visible edges, but the sheer number of small parts (fingers, movable armor tabs, the Core Fighter's internal linkage) means cleanup and test-fitting take longer than a typical MG.

The standout here is the Movable Armor System, where the shoulder armor and backpack covers shift out of the way as you pose the arms, which is the detail that actually sells the wide range of motion instead of just the joint count on paper. Color separation is strong for the G-3 palette without heavy sticker reliance for the main color blocks, and the kit carries the same weapon and accessory loadout as other Ver.3.0 releases, so it doesn't feel thin on extras despite being a recolor.

Lore & trivia

01The RX-78-3 G-3 Gundam was built as a test platform for magnet coating technology, the same technology later fitted to Amuro Ray's RX-78-2
02G-3 ran an early version of the NICN learning computer system, the same line of tech later used in the RX-78NT-1 Gundam NT-1
03This MG release shares its Ver.3.0 inner frame and articulation package with the standard MG RX-78-2 Gundam Ver.3.0, just in the G-3 test unit's gray and light-purple colorway
04It was sold as a Gundam Base exclusive kit starting in September 2024