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Matrix "QD Fast Spring Change" 8mm Gearbox for M4 M16 Airsoft AEG - Rear Wire

3 Customer Reviews

by Robin H. on 09/14/2013
"First off the box of this says it's dboys, but it actually very nice. As soon as I took it out of the well padded box I could tell it was solid. It's a bit tight in my 416 body but it still fits, and since its a dboys gearbox, it should fit perfectly in a dboys body.

Pros: great shimming, great gears and air compression, the qd spring is mice if you switch from field to cqb, the micro trigger gives it a great response, and a great rof with a lonex a1 motor and a 9.6 battery

Cons: none really, but I would not recommend an 11.1 lipo in this

Overall this was a great purchase for the money, I highly recommend this gearbox
by Raquel R. on 04/24/2015
"This is a great gearbox for the money, however it has it's many pros and cons to it.
Cons: tight fit in guns reciver ( g&g cm )
: it has selector switch issues, can be easily fixed
: spring isn't m120
: some of the body pin holes army the right size way to small
Pros: decently shimmed gearbox
: nice gears
: it's a qd spring change that's a huge pro !
: very sturdy gearbox with a lot of heft
: nice Matt finish but my gearbox came with a purple cylinder ( that's ok)
All in all it's a OK gearbox but it still holding through perfectly, do t buy this with no tech xp
by traci B. on 10/05/2013
"i got the gearbox yesterday and it seemed pretty good when i was looking it over but when i tried to put it in my gun the tirrger would not go as far back as it need to in order to go in my gun i sanded the trigger hole till i was able to put it in but then it would only go on semi and my hop up would not fit around the nossle i am sill trying to get to work correct the spring guide is also plastic it seems like o good box you just need to be ready to modify the gun or the box. i will try to put more as soon as i get it to work correct. i did change the spring before i tried to put it in my gun and it was a lot easier then taking the hole thing apart