EMG Platinum Complete Version 2 Gearbox w/ Motor for M4/M16 Airsoft AEG (Model: Rear Wired), Accessories & Parts, AEG Internal Parts, Gearbox, Version 2 Gearboxes - Evike.com Airsoft Superstore
Partial Airsoft V2 gearbox | 3D CAD Model Library | GrabCAD