I've had a nuprol aeg for a while now and have done a few upgrades to it now and its running quite well and hasn't failed me im now looking to put a gate titan into it but I don't want to have to modify the gearbox shell I know that the titan fits in to the E and C gearbox shell and I was wondering if the E and C shell would fit into a nuprol upper and lower receiver can anyone shed some light on this