Echo1 M16 Complete Gear Box with MOSFET

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Echo1 M16 Complete Gear Box with MOSFET
Echo1 M16 Complete Gear Box with MOSFET
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Zephyr Low Price:$149.95
Compare to: $169.95Save $20.00 (11%)

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Manufacturer: Echo 1
Sku: ECHO-2440-00004

Echo 1 M16 Gear Box with MOSFET

A complete upgraded drop in Version 2 gearbox made for M4 / M16 Airsoft AEGs. This gearbox uses a 7mm reinforced shell with 6 7mm bearings for frictionless gear movement and better efficiency. The spring guide has been upgraded to a metal guide to stabilize spring and piston travel, the piston includes metal teeth to take the strain off the polycarbonate and keep the piston from stripping, and a ported polycarbonate piston head provides an expanding seal when firing, while opening up vents to allow air into the cylinder while cycling. The gearbox also has an upgraded wiring harness with ultra low resistance wires and a built in mosfet to increase the gearbox's rate of fire and trigger response. Upgrade everything at once with a pre-built gearbox from Echo1!


  • Echo 1 M16 Replacement Parts.
  • 7mm Reinforced Gear Box
  • 7mm Bearing
  • Metal Spring Guide
  • Metal Gear Set
  • Metal Tooth Piston Body
  • Alum. Cylnder
  • Ported Polycarb Piston Head
  • MOSFET LOW Resistance Wiring Harness (to the back/ M16 style)