The Scubapro MK19 EVO / G260 regulator system with R105 Octopus combines a compact, environmentally sealed diaphragm first stage with a versatile, air-balanced second stage designed for reliable performance in cold water, overhead environments, and technical diving conditions. The MK19 EVO delivers consistent intermediate pressure and protection from contaminants, while the G260 provides smooth, controlled breathing across varying depths.

The MK19 EVO first stage is built from chrome-plated marine brass and features a sealed dry chamber to enhance freeze resistance and durability in harsh conditions. Its compact design and swivel turret allow flexible hose routing, making it suitable for streamlined scuba regulator configurations. The G260 second stage uses a metal valve housing and reinforced technopolymer body for strength, durability, and improved thermal exchange. An adjustable inhalation effort knob and Venturi-Initiated Vacuum Assist (VIVA) lever allow precise control of breathing performance. The included R105 Octopus provides a reliable alternate air source with a classic downstream valve design and high-visibility front cover for quick identification.