VFC

VFC ECS Complete Gearbox Gen 2

ICS Airsoft

ICS EBB Lower Gearbox w/ SSS (UK1/HOG/YAK/CS4)

Lancer Tactical

Lancer Tactical Polymer M4 Receiver Set for Airsoft AEGs, Black

GATE Airsoft

GATE EON Complete V2 Gearbox with TITAN II BT 450 FPS/1.9J, Front Wired

Super Shooter Version 2 8mm Gearbox Shell Aluminum CNC Machined Taiwan

GATE Airsoft

GATE EON Complete V2 Gearbox with TITAN II BT 350 FPS/1.2J, Rear Wired

GATE Airsoft

GATE EON V2 Gearbox Titanium

GATE Airsoft

GATE EON Complete V2 Gearbox with TITAN II BT 350 FPS/1.2J, Front Wired