These Solink gears feature machining enhancements, improved quality control, and premium packaging.

Some improvements include more aggressively chamfered gear edges (particularly on the step gear), which allow for smoother engagement and improve overall performance. Solink boasts a new axis design which improves gear concentricity.

Manufacturers notes:

- Solink High Speed Gear Set for Gearbox
- Suitable for Version 2 / 3 Airsoft Electric Gun AEG Gearbox
- High strength; not easy to deform.
- Increases rate of fire.
- CNC machining, enhanced gear to be more durable and bearing stronger spring
- New axis design -- improved gear concentricity.
- Lower electricity consumption & lower noise.