[Drakker]

Change the barrel only if you suspect there is a problem with your current barrel. If accuracy is good, there is really no need to change. Also, if your suppressor is foam filled, there will be a slight decrease in the sound output of your rifle, which is never a bad thing (although in AEGs most of the sound comes from the gearbox and in GGBs it comes from the blow back chamber). If you extend the inner barrel all the way through the suppressor, you will lose the sound dampening effect of the suppressor.