The M2 is a robust and proven single-stage HVAF gun designed for efficient coating of metals, alloys, and carbides using air–fuel combustion. Its simple, reliable architecture ensures stable operation, fair to high deposition efficiency, and the production of dense, low-porosity coatings with consistent quality and minimal maintenance requirements. The M2 also excels in applying impermeable Flash Carbide coatings, with or without the use of hydrogen.

The M3 was the first dual-nozzle supersonic HVAF spray gun, introducing the dual-stage combustion principle to the HVAF process. It is a versatile system capable of operating in both single-stage and dual-stage modes, allowing precise control of particle heating and acceleration for a wide range of materials — from metals and alloys to hard carbides. In dual-stage mode, secondary combustion inside the extended nozzle increases jet temperature and particle velocity, enabling dense, high-hardness coatings with excellent adhesion, surface finish, and deposition efficiency.

The M4 builds upon the dual-stage combustion concept introduced with the M3, offering improved particle heating, higher deposition efficiency, and superior coating performance. It operates in both single-stage and dual-stage combustion modes, providing flexibility for spraying a wide range of materials — from fine HVAF-cut carbides to coarse HVOF-grade powders. In dual-stage mode, secondary fuel combustion within the extended nozzle compensates for thermal losses and boosts jet energy, producing dense, high-hardness coatings with excellent deposition efficiency and minimal oxidation. Its dual-nozzle design with air pre-heating further increases combustion temperature by redirecting process air to first cool the combustion chamber before entering it, enhancing both thermal efficiency and component life.

The M2H is a compact, simple, and robust handheld HVAF gun, designed for maximum mobility and ease of use in field or workshop applications. Its single-stage combustion system ensures stable and efficient operation, while the lightweight design and ergonomic handle provide comfortable manual spraying. The M2H excels in applying Flash Carbide, metal, and carbide coatings with dependable quality, high deposition efficiency, and minimal maintenance requirements.