In this video REAPERS Airsoft how the upgrade done on the JG AUG/S77 A3 Commando using parts available at Begadi... "Hello guys, in this video we will upgrade the JG AUG/S77 A3 Commando a bit. We are installing the new Begadi Orion CNC HopUp chamber and the speed trigger mod. We will also improve the feeding of the magazines and equip the system with 13:1 gears with a 28K motor."