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z Matrix Custom Complete Lipo Ready 9mm Gearbox for M4 M16 Series Airsoft AEG
by Zachary H. Date Added: February 2, 2012
This gearbox was pretty good for the price. I currently use it with a Matrix magnum 3000 motor.
DO NOT GET this if you dont know how to open and close a gearbox though. Mine came with the piston head loose inside the gearbox and the trigger assembly broken. I had spares so i dont really mind.

Rating: 4 of 5 Stars! [4 of 5 Stars!]
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