Versions 2 and 3 Gearbox Shells to replace your original Gearbox Shells from brands such as Guarder, JG Works, King Arms and Krytac.
Guarder AK Enhanced Motor Mount
G&G V2 Gearbox Shell 8mm Genn 2 Enhanced
Guarder V3 Enhanced Gearbox Shell
Guarder V2 Enhanced Gearbox Shell
Krytac Nautilus V2 Gearbox Shell
Also for other AEG platforms
EG Hard Gearbox V2 Shell 8mm