You can minimize it but not eliminate it.
There was a post somewhere about making an AEG quieter, one things you can do is use sorbo pads, shim your gears right and set your motor height right. It will still sound like a sewing machine but it will minimize the "toy-like" sound.
The only real way is to go with a GBBR but in that case it's a money pit.
ಠ_ಠLess QQ more Pew Pew
READY TO >> RACE