ECS Gearbox:

Blue (FE-NZ-BLU-M4)

L85 Series Airsoft AEG Rifles

at bottom and in center of housing to ensure the hopup unit is exactly centered

Prowin Hopup

TTI Sand Viper Hi-Capa by JAG Arms Airsoft Pistol AEG Gears ECS Gearbox:Features Optic cut slide with mounting plate included takes RMR and Doctor sights Integral mock compensator barrel 11mm threaded for barrel extension or thread adapters Inner barrel extended beneath compensator, providing better accuracy and velocity Non tilting barrel design ensures smooth cycling regardless of compensator or barrel extension mounted to the end 4. 5 length slide for quicker cycling and follow up shots with the performance of a full