Review: Gunze Mr. Airbrush PS-770


A few years ago, I found a screaming deal on a gently used Iwata CM-B Custom Micron.

Did I need it? Not really. But I’d been hearing Custom Microns talked about in reverent tones and was curious if the hype was real.

Was it ever.

I’m something of an airbrush whore, so I’ve sprayed a lot of different brands and types. And quite frankly, none of them were really any better than my trusty Iwata HP-C Plus. Even the vaunted Harder & Steenbeck Infinity.

The Custom Micron changed that. The atomization, the trigger feel, the relatively broad engagement point that makes it more feasible to spray consistently small – all of them combine to deliver a spraying experience that no other airbrush can match.

It’s so good that I use it for 85-90% of all painting duties.

The thing is, though, Custom Microns are not cheap.

So when I caught wind of this Gunze PS-770, I was immediately intrigued. Many of Guzne’s airbrushes are certainly at the very least kissing cousins of various Iwatas. And the PS-770 appears for all the world like a Gunze take on the Custom Micron CM-C+, with the .18mm needle/nozzle combo from the CM-B.

But instead of $400-500, the PS-770 can be snagged for $200-250.

Is it a Custom Micron in Gunze clothing, or is it too good to be true?


Well – I had to find out, so I bought one and put it to the test.

Check out the video below to see how it went:

8 Comments Add yours

  1. Dennis McCarthy says:

    Very helpful review. Thanks!

  2. Gus says:

    Thanks for the great review Matt. Definitely piqued my interest there – I can see a late Xmas purchase in the offing. Just a pity the £ is lower than a snakes belly at the moment.

  3. Nice review, indeed, Matt.
    I am not a metallurgy expert, or anything, but do you reckon the finish on the 770 is nickel? It reminds me of some of the old-school BMX bikes from the late-70s/early-80s like Redline and Mongoose. They used nickel plating for their stuff and look a bit duller than regular chrome. Durable finish, just a little less expensive.
    Brett G

  4. sekar ayu says:

    ps 770 it’s fuckin awesome airbrush. construction like iwata v2. get in combo cm c plus body with cmsb nozzle. i think the best airbrush in reasonable price, atomization work, precision japanese product

  5. SprayGunner says:


    Thank you for this review! Just want to let you know that all GSI (Gunze) airbrushes and parts now available in the USA.
    Not all pictures ready yet so we will list the rest withing next week but here are most of them:
    Technical support now comes from Florida!

    Best regards,
    SprayGunner Team

  6. Chris Just says:

    Just out of curiosity, what type of compressor are you using? I heard it in the background cycling and hope it wasn’t one of those Grex in-line reserve types.
    Chris the cabbie

    1. Doogs says:

      It’s a Grex AC1810-A. Not great and chattier than I’d like, but it works and I’ll probably keep using it until it decides it’s had enough.

  7. isteve66 says:

    Good review Matt. It’s always nice to learn where you can save a buck – or a hundred – but still get great quality.
    The screw on the bottom of the Micron that you point to is not a trigger adjustment screw, it holds a ring inside the body that acts as a guide for the needle chuck, as well as protrudes upward to keep the guide from turning while being drawn back. The newer V2 Microns do not have the screw, so that’s one less difference between the two brushes.

    Stephen Kennedy

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