Build with VFC M4 GBB system (feed nozzle and mags).
With VFC VMAG V3 30rds gas magazine.
ESD 7075-T6 Forged Receiver​
ESD CNC steel bolt carrier
ESD Forged Charging Handle
ESD Steel Receiver Pin
ESD Steel Forward Assist
ESD Precision inner barrel 6.02
ESD Hop up rubber
ESD Buttstock Fixing Ring
ESD RECEIVER END PLATE
ESD Steel Ejection Port Cover 
ESD Recoil Buffer
ESD Receiver Extension
ESD Bolt Stop
ESD CNC Steel Trigger
ESD Steel Firing Pin Base
ESD Steel HOP UP set
ESD Quick HOP-UP Adjusting System