The complete, fully-assembled, "Drop-In" Energy mechboxes are the lightest and newest upgrades available from Systema! Built with the best parts and industry leading engineering from Systema, these gearboxes are built for power, reliability, and energy efficiency. The entire Energy line up of performance upgrade parts is now available in one convenient package. So if you are looking for a complete upgrade solution for your AEG, then act fast to grab yourself one of these!
Design: Version 2 M4 (wire to front)
This Gearbox comes with: