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Matrix / AIM Lipoly Ready 8mm Complete Gearbox for M4 / M16 series Airsoft AEG ( M120 / Back Wiring)
[GB-Monster-120B]
$110.00
by Marc P. Date Added: Saturday 11 April, 2009
solid gear box put it in dboy m4 with stock barrel, got it shooting over 438fps on average. hit a high of 448. deff gonna need a large type battery with gear box and g&p m120 motor i only get bout 3 1/2 hrs out of my matrix high output 8.4 1500mah batterys

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