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z Matrix Custom Complete Lipo Ready 9mm Gearbox for M4 M16 Series Airsoft AEG
by joel r. Date Added: May 14, 2012
Mine also came with the trigger assemblly cracked in 3 pieces.

Overall its a decent gearbox.

Airseal nozzle has a o-ring.
2 o-rings on the aluminum cylinder head.
Piston comes with first half poly teeth second half metal teeth.
Ball bearing spring guide.
Mine came shimmed but recomended to get in there and shim it properlly.
Gears are ok.

If u plan on running this gearbox on a 11v lipo and high speed motor your going to need a mosfet.

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