CYMA CNC SR25 Aluminum Ver.2 Gearbox Shell Airsoft Tiger111HK Area
A&K Complete Metal Gearbox for SR25 Series Airsoft AEG Rifles, Accessories & Parts, AEG Internal Parts, Gearbox, Version 2.5 / SR25 Series - Evike.com Airsoft Superstore
Other gearboxes : Complete gearbox for A&K SR-25 - AirsoftPro.cz