LCT Airsoft AK-47 AEG Rear Wired Version 3 Gearbox
Gearbox – all models | OioiAirsoft
Ultimate Complete Gearbox for AK/Arsenal High Speed | JD Airsoft Ltd
O&T Airsoft AEG QD UMP 7mm Complete Gearbox – Outdoor and Tactical
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
8mm Full Gearbox Set (Version 2, Rear Wiring) for M4/M16 [CYMA] | TaiwanGun US & EU