New Quantum Two-Sector Gear for Ver.2/Ver.3/Ver.6

Ver.2/Ver.3/Ver.6 gearbox
The patent approval Dual-sector design enables 2 rounds of firing per gear turn.
Half-cycle cut-off system retains the semi-auto fire functionality.
This Dual-sector gear is made of high-tensile steel. The other components are CNC-made of high-quality steel alloy for superior durability.
The Shape-optimized sector clip delays the release of the tappet plate to help minimize the BB feeding issues.
This Dual-sector gear is compatible with Modify Speed/Torque and Tokyo Marui stock ratio gear sets.
363mm or shorter inner barrels are recommended.
Avoid using spring spacer with SP150+ or stronger spring.