We have tested these in a few gearbox and we can only confirm that this is a drop in for Ares guns only. This makes this a great choice if you have an old Ares Honeybadger that needs an update.

Elevate your airsoft performance with the ARES HEB-001, expertly engineered for Tokyo Marui and ARES M4 AEG Series. This cutting-edge gearbox set allows you to convert your standard AEG V2 gearbox into a high-performance HPA system, ensuring superior efficiency and reliability.

Key Features:
• Universal Compatibility: Designed for use with gas, CO2, and compressed air systems.
• High-Tech Build: Integrated electronic circuits and a single-sided selector for precision and ease of use.
• Enhanced Power: Operates with air pressures of 4 BAR and above, delivering consistent and powerful performance.
• Premium Battery Setup: Optimized for an 11.1V battery with a TX30 connector for maximum reliability.
• Effortless Conversion: Easily upgrade your Tokyo Marui M4 AEG to a modern HPA system with this all-in-one solution.

Please note that this system requires a 11.1v 350MAh LiPo battery with XT30 connector to function.