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Airsoft AEG Gearbox and Accessories

The Skeleton of an Airsoft Gun?

In this category, you will find complete gearboxes from top manufacturers with high quality performance parts. Complete gearboxes are an easy way to upgrade your airsoft guns performance. Reinforced gearboxes are important if you plan on upgrading your gun to have a higher velocity since an upgraded spring usually puts more strain on your stock gearbox and stock gearboxes tend to warp and crack when a high tension spring is installed.

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Polar Star JACK HPA Conversion Kit For M4/M16
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Polar Star JACK HPA Conversion Kit For M4/M16

  • Made in the U.S.A.
  • CNC Machined Aluminum with High Performance Delrin Nozzle
  • Adjustable Velocity / Rate of Fire
  • Center Line Nozzle Design

$345.00

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$49.00

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Echo 1 V3 Mechbox Shell ONLY (Paint Varied)

Echo 1 V3 Mechbox Shell ONLY (Paint Varied)

  • OEM Replacement
  • Durable Material

$29.99

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