Kays Airsoft goes over the features of the Golden Eagle M4 C16 Modular S-AEG that is made available by Begadi for Germany-based airsoft players. According to Begadi, the Golden Eagle’s 0.5 J. models are specially adapted with tuning internals, including a 12T Sector Gear, allowing for the use of 11.1V batteries with a high rate of fire (ROF) and an installed ASCU (EFCS) with Mosfet for burst mode.