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VFC Version 2 ECS Complete Gearbox Set (Model: M120 / Flat Trigger)

ID: 10471 (GB-VF9-GBX-V21R-03)
3.5 stars, based on 2 reviews
VFC Version 2 ECS Complete Gearbox Set (Model: M120 / Flat Trigger)
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MAP ProtectedExempt From Coupons
The manufacturer of this product enforces a strict minimum advertised price (MAP) policy which excludes this product from any additional discount coupon codes. This item, however, may qualify for free shipping.
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Free shipping within lower 48 US states, no coupon code needed!


  • Standard version 2 gearbox design
  • Reinforced polymer internal components
  • Inline wired MOSFET
  • Match grade internals
  • Quick change spring guide
  • M120 Spring Included

Manufacturer: VFC


Compatibility: For VFC M4/M16s and other AEGs with a V2 gearbox
Material: Metal Alloy, Polycarbonate

2 Customer Reviews

(Write a review)

by Eric M. on 08/15/2018
"Solid gearbox! I recently installed this gear box for my first "ground-up" M4 build. No regrets spending the money.
by Chris r. on 02/02/2019
"Got this gearbox two times

First time- trigger contacts went off the rails and would onky shoot semi. RMA and received new one

Second- same thing happened with trigger contacts went inside and fixed it, worked fine. Then after 500 bbs MOSFET
Fried our with 11.1v . Will not recommend anything higher than 9.6v with this. Also very picky with any receiver other than VFC

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