Hi ! Everyone, I'm planning to get this gearbox for my M4, also I had the systema motor. I don't know if it is possible for me to put two of them together, also I have no idea what is the advantage and disadvantage of it when I put together. I really want to put the systema too, but too bad I'm not gearbox geek, just want to a simple one and easily to install because this one already had rear wired with dean connecter. I just need to take from the box and put into my gun. Any suggestion please ? I saw the gearbox of Zener, just wonder how is it different between him and mine ? Thanks so much for everyone who reading.
Cheers !
KND
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