Contact Us (626) 286-0360 Walk-In Superstore Daily Deal
New Phone Support Hours M-F 8am-5pm PST
Browse by Type or Category
Happy Airsofting! 25% OFF (Exclusions apply, see details)   Use Code: SUMMER2017

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

4 Customer Reviews

by Brandon Thomas G. on 05/02/2017
"Gearbox is solid and quiet. Shimmed perfectly. Fires great with the lonex A1 motor. Gearbox fit perfect in my m4. Only issue was getting the metal lonex hop up to seat properly.
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