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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 David B. Date Added: Friday 16 January, 2009
I installed this into my STOCK JG HK416 Full Stock with a 9.6 volt 3000 mah battery to push it. My stock FPS was 396 fps. With this Gear box and my 9.6V 3000mah battery installed the FPS jumped to 434 fps, just from the install. I had it chronoed by Airdog Airsoft at an event my team hosted in Alabama on 1/2/09. I'm lucky I was planning on it becoming a sniper rifle.

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