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z Matrix Custom Complete Lipo Ready 9mm Gearbox for M4 M16 Series Airsoft AEG
by chad c. Date Added: June 28, 2012
great gear box m100 spring and the gun shoots 400 fps. i also had the same problem with the trigger after one use the trigger broke and was unusable so had to buy a new one. that has been the only complaint i have on this gear box other wise great bear box very tight.

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