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This CRBN Gearbox enables you to use a CRBN Upper with ANY V2 airsoft replica engine system! It's now possible to use Polarstar drop-in engines such as the F2, F1, and Jack in your build, as well as the Gate Pulsar!
Expand the capability of your CRBN upper builds with an AirTac Customs CRBN Gearbox!
This AirTac Customs CRBN Gearbox includes:
AirTac Customs Gen 2 CRBN Gearbox:
- Machine milled to perfection
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Included Gate Pulsar Spacers
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Included Trigger Board Screw
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Upgraded Dual Tensioning grub screws to eliminate engine wobble
- Gearbox screws for both halves
- Allows compatibility of a CRBN Upper with any drop-in HPA engine
- Does not include selector plate
Compatible with:
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[CRBN] G&G-style V2 Lowers (SSG1, ARP9, SSG556, etc)
- Any other V2 lower, upper, and grip.
Matthew J.
I’ve taken all the gearboxes out of my build and replaced them with AirTac gearboxes. I have gearboxes from gen1 to gen 2 v2. I love the constant improvement of these gearboxes, how light weight they are, and all the applications they fit. I will continue to chose these gearboxes over any other.
Matthew G.
The AirTac gearbox is lightweight and durable. I highly recommend this gear box if you’re running a AirTac CRBN upper. You even have room to put a battery in the top of the gearbox too.
Pierre B.
Vraiment facile à monter, très bonne ajustement du nozzle
Benjamin Afante Jr
quality of the gearbox is great, just perfect for my polarstar build. adjusting things was easy and placement fit just right. the window made instaling the end cap much easier haha but also it kept nice and aligned with the airtac upper. definitely must have
Matthew Jalette
This gearbox is perfect for any application. Very well made. Easy install. I own 3 of them now!
Anonymous
Worked with my airtac upper perfectly that I bought at the same time. Whole set up shoots Lazer beams, literally. Highly recommend and the staff is knowledgeable and kind. This is the setup to have with Airtac parts for the new season.
Dash Pereira
I love this gearbox as it is easy to install and it makes the install of the CRBN upper much easier.
Anonymous
there carbon uppers and the gearbox make your gun 10x lighter
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