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Matrix / AIM Lipoly Ready 8mm Complete Gearbox for M4 / M16 series Airsoft AEG ( M150 / Back Wiring)
by jay o. Date Added: Saturday 28 February, 2009
really nice gearbox, shoots 527 fps with .2 BB's. The internals are good except the piston breaks easy. even with a polycarbon piston it still breaks. I changed the spring to 130 with polycarbon piston then it shoots smoothly and been using it for a month. 150 spring just messes up the parts. I recommend this gearbox just replace the spring or just get the m120. But the back wire is really short so if u install this on classic army your gonna drill the sling ring.

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