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Matrix / AIM Lipoly Ready 8mm Complete Gearbox for M4 / M16 series Airsoft AEG ( M120 / Front Wiring)
[GB-Monster-120F]
$110.00
by brad h. Date Added: Saturday 28 February, 2009
Great gearbox! The big problem I had was it seems like I was given the m150 one not the m120 like I wanted. With the spring that came in it it got 500fps, and with a m100 spring it shot 370 fps. Right now I have a m110 spring in there which is shooting around 430-440 fps and the rof is great. The motor I'm using is a G&P m120. the only reason for the 4 stars out of 5 is the spring being way to strong. Both my TM EG1000 and G&P m120 motor were having problems turning the gearbox over. But if I think about it I know now that the gearbox is very strong and also the internals are topnotch.

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