A custom built Classic Army M4 AEG that can be used stealthily enough is shown here by Kenny Lukito... "This Classic Army based M4 is really good for silent gameplay, it uses 7.4v lipo battery and it shoots with minimum sound. Eventhough the ROF is low, the accuracy of this gun is still a beast , it uses a G&P body and Classic Army gearbox. It contains a silent machine with a tough G&P body. A really good combination."