10361731 - Tweco Spray Master 350 MIG Gun, 15ft, Miller Style

Legendary Performance with the ESAB Tweco Spray Master 350

The ESAB Tweco Spray Master 350 (MS315M) is a heavy-duty, air-cooled MIG gun designed to meet the rigorous demands of industrial welding. Known for decades as the industry standard for reliability, the Spray Master series combines robust construction with operator comfort. This specific model features a direct connection for Miller wire feeders, making it an effortless upgrade or replacement for your existing equipment. With a 15-foot cable, it offers the reach necessary for large fabrication projects while maintaining consistent wire feeding performance.

At the heart of the Spray Master 350 is its ability to handle high-amperage applications with ease. Rated at 350 amps at an 80% duty cycle with CO2, this gun is built to stay cool under pressure. The ergonomic handle reduces operator fatigue during long shifts, and the fully insulated design ensures safety in tough shop environments. Whether you are welding mild steel, stainless, or aluminum (with the correct liner), the Spray Master delivers a stable arc and precise control.

Maintenance is a breeze with the Spray Master design. It utilizes standard Tweco consumables—including the widely available 11 Series contact tips and 52 Series gas diffusers—keeping your operating costs low and parts sourcing simple. The conductor tube can be rotated 360 degrees, allowing welders to access tight corners and awkward joints without straining their wrists. For a MIG gun that balances performance, durability, and cost-effectiveness, the Tweco Spray Master 350 is the professional's choice.