If you want a comprehensive review of the new VFC/Umarex HK MG4 AEG, REAPERs Airsoft will be most comprehensive as always going over this airsoft LMG that is equipped with MOSFET for over two hours... "Hello everyone, in this video we are going through the new HK MG4 from VFC/Umarex as a 0.5 Joule AEG."