HGCosmic Era

ZGMF-X56S/γ Blast Impulse Gundam

The Impulse traded its wings for two rail cannons, and honestly I love it more this way.

MechaGrade Score

3.7/5

γ Blast Impulse Gundam · 1/144 · 2016

GradeHG

Scale1/144

Released2016

Runnersn/a

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The verdict

This is the Impulse kit I reach for when I want to build a gunship, not a swordsman.

The Blast Silhouette turns the base Impulse frame into an artillery platform, and Bandai actually gave that concept room to pose, not just stand there holding guns. It is not the most refined HG on the shelf, the stickers are weak and the waist articulation has real limits, but the concept payoff is worth the trade.

Best for: Cosmic Era fans who want the Blast loadout specifically and don't mind a modest HG budget kit to get it

The full review

What it is

The Blast Impulse is the base Impulse Gundam frame wearing the Blast Silhouette, a P-Bandai HGCE release that swaps the Force pack's wings for a shoulder-mounted Kerberos beam cannon, the Deluge rail gun, and a triple missile launcher slung under the waist. Building it feels like assembling two kits at once, a fairly ordinary HG Cosmic Era body followed by a genuinely chunky weapons rig that clips onto the back and hips. The moment I mounted the Deluge cannon and slid the whole assembly onto the frame, the kit stopped feeling like just another Impulse recolor and started feeling like the artillery specialist it's supposed to be. It stands on its own fine despite the extra weight, which is not something I take for granted with backpack-heavy HGs.

The catch

The decals are the weak point everyone flags, and I agree, the ZAFT markings and gun lens stickers are plain and some peel or misalign easily on application. There are a couple of hollow spots on the rail gun and shoulder mounts where Bandai clearly cut corners to hit the HG price point. Waist rotation exists on a ball joint but the skirt armor blocks a lot of the swivel, so twisting poses are shallower than I wanted. None of this ruins the kit, but if you're coming from an MG frame this will feel like a step down in finishing quality.

Who it's for

If you're building out the Impulse's silhouette system and want the Blast loadout specifically, this is the accessible way in, and at HG price and part count it's a reasonable weekend build rather than a big investment. Skip it if decal quality or fine articulation are dealbreakers for you, or if you'd rather wait for a scale that gives the Blast pack more detail (there is an MG version if you want that). For anyone who just wants a gunship-mode Impulse to sit next to a Force or Sword build, this does the job and looks the part once assembled.

The build story

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

The base frame goes together the way most HG Cosmic Era kits do, snap-fit with light cement-free assembly and no real surprises, but the Blast Silhouette adds a second build phase that's noticeably chunkier than the body. Cleanup is easy since the nub placement avoids visible seams on most parts, though the rail gun and shoulder cannon have a couple of hollow spots that show if you look for them.

Articulation is the strong suit here, the base Impulse frame flexes well at the shoulders, elbows, and knees, and even with the full weapons rig mounted the kit holds firing poses without drooping. The waist is the one joint that disappoints, the ball socket is there but the skirt armor cuts the swivel range down a lot. For the price band this is a solid parts haul, three distinct weapons (Kerberos beam cannon, Deluge rail cannon, triple missile launcher) is a lot of loadout for an HG.

Lore & trivia

01The Impulse Gundam's silhouette system let it swap between Force, Sword, and Blast equipment packs mid-battle, the same modular concept behind the earlier Strike Gundam's Aile, Sword, and Launcher Strikers
02The Blast Silhouette prioritizes the Impulse's energy supply toward weapon output rather than mobility, making it the dedicated long-range artillery loadout of the three packs
03This HGCE release was a P-Bandai (Premium Bandai) online exclusive, first released in 2016 as part of Bandai's ongoing Cosmic Era HG revival line