This review by L’Antre du Dingo compares two 100% mechanical HPA drop-in units from MechLabs: the NEXXUS and the updated XX-MOD. These systems are unique because they provide semi and full-auto fire without any batteries or electronics, making them immune to water damage and electrical failures during gameplay. While the units are well-machined and visually impressive, they are primarily marketed toward the speedsoft community.

Dexter Airsoft gives us an overview of the X-Mod HPA engine. Mechlabs say the X-Mod represents the next evolution in mechanical HPA technology, designed with direct feedback from the global airsoft community. This system is engineered for unmatched expandability and adaptability, combining modularity with precision to meet the needs of both players and technicians. Whether for performance tuning, platform conversion, or field maintenance, the X-Mod is built to evolve with you.

iiAnferny presents his airsoft rifle built with the Nexxus mechanical engine from Mech Labs at Gamepod, showing its advanced, air-efficient performance akin to the Arc platform. Designed for customization, it's compatible with most M4s using a V2 gearbox and suits various configurations, including speedsoft builds. Fully mechanical and battery-free, it delivers fast trigger response with semi and full auto capabilities, firing over 3,000 shots on a standard HPA tank.

An out of the box video by Amped Airsoft of the MechLabs NEXXUS SA HPA Engine. Ross provides an overview of the engine's features, detailing the installation process, and discussing both the advantages and disadvantages encountered. The review further includes gameplay footage showcasing the engine's performance, ultimately offering a comprehensive understanding of what users can expect from this product right out of the box.

Dexter Airsoft reviews the Mechlabs Flo Max Regulator, a new HPA regulator featuring CNC machined construction, a high cooling rate, an operating range of 60-150 PSI, a pressure indicator manometer, a black finish, an externally reinforced line, and a Foster 2202 (US) connection type.

At the Mechlabs' booth during the MOA Exhibition Taiwan 2024 is the Nexxus HPA Engine that is a powerful, battery-free upgrade for your M4/AR15. This full-mechanical engine offers both semi-automatic and full-automatic fire modes, activated by a simple selector switch. Powered by an HPA tank, it delivers ultra-fast trigger response and impressive efficiency, capable of firing over 3000 shots on a single 48/4500 tank fill.