MEDUSA ETU FULL GEARBOX WITH HOPUP UNIT LMG Use our First Tactical Hook

Use our First Tactical Hook Pocket to conceal the hook closure when needed

coating of the multi-layer lens

Magnetic box cover

Optional brass holding ring included for use if BBs roll/drop out

First Stage: Adjustable and extremely lightweight trigger travel

MEDUSA ETU FULL GEARBOX WITH HOPUP UNIT LMG Use our First Tactical HookFull Metal Gearbox Set for M4 M16 AEG Airsoft Rifles With Poseidon Medusa ETU Upgrade your airsoft rifle with this complete full metal gearbox set, designed to deliver rugged reliability and next generation electronic control. Built to fit standard AEG M4 M16 platforms, this set is ideal for both replacements and serious performance upgrades. At its core is the Poseidon Medusa ETU (Electronic Trigger Unit) a revolutionary system that offers Bluetooth