|The following is based on the spin off novel by Keith R. A. DeCandido and some details might contradict canon.|
The GD-5 is a planned upgraded version of the GD-4 automatic assault rifle. The new design would have a device that allows the solider to quickly switch from a grenade launcher to a railgun (and vice versa) with a simple button press.
- Tiberium Wars Novel Keith R.A. DeCandido
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