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User-friendly Modify - Quatum Gear Set Double Cycle (16:32)- Gb-09-61 Best Choice [QCW527Kf]

$25.99 $83.99 -69%

Modify Quantum Gear Set The Quantum Gear Set is CNC made from high quality steel alloy.The machining process is totally different from the old one, make Quantum gear set more strength!!Feature"Two-Sector" design allows double cycle – two shots per se

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Modify Quantum Gear Set
The Quantum Gear Set is CNC made from high quality steel alloy.

The machining process is totally different from the old one, make Quantum gear set more strength!!

FeatureYour browser may not support display of this image.

  1. "Two-Sector" design allows double cycle – two shots per sector gear cycle. Half-cycle cut-off system retains semi-automatic fire functionality.
  2. Half-cycle cut-off system retains semi-automatic fire functionality.
  3. The Two-Sector gear is formed by high tensile strength steel powder metallurgy. The other components are CNC made from high quality steel alloy, offering superior durability.
  4. Shape-optimized Sector Clip delays the releasing time of the tappet plate, which helps to avoid BB feeding problem. Shape-optimized Sector Clip delays the releasing time of the tappet plate, which helps to avoid BB feeding problem.
  5. The Two-Sector Gear is compatible with Modify Speed, Modify Torque and stock ratio gear sets.

Kit contents:
Quantum gear set
Special Tappet Ver. 2
Spring Guide Spacer

Useful tips:

  1. Recommended to be used in setups with 363mm or shorter inner barrels.
  2. Suggested internal parts:
  • Modify New Ultra Piston (8 metal teeth) / Modify Quantum Piston
  • Modify Rotary Spring Guide
  • Modify Cylinder Head
  • Your browser may not support display of this image. Modify Torus Gearbox

Suggested spring ranges for Modify Quantum gear set

image

NOTE The data sheet is based on using the standard motor and 8.4V battery.

Warning:

  1. Barrels long above 363mm setups may not function correctly with the Quantum Gear system.
  2. Do not install the spring guide spacer into regular full stroke setups.  Doing so will lead to severe damages to the gearbox parts.
  3. The Quantum Gear Set may not operate properly or may be damaged if it is installed to a wrong way.

Package:

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What Our Customers Say

January 8, 2026

Absolutely no complaints!

This is a top-quality product, and no doubt.

- Douglas L..

January 8, 2026

Absolutely no complaints!

A great product that is so very easy to use.

- Beau J..

January 8, 2026

Absolutely no complaints!

It’s a very solid and a very capable product.

- Kenzie T..

Write a Review

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