Exactly what it says on the tin; these are either complete and fully functional Gearboxes, or a high-quality shell for you to start your own dream Gearbox from the ground up, with the exact parts you want to create your custom monster. Feeling like diagnosing that fault is too much of a chore? Replace the entire gearbox in one go to just have done with it.
Airsoft Electric Parts - Gearbox
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