10361716 - Tweco Spray Master MS315FLX-3545M MIG Gun 350A 15ft Flex Neck

Heavy-Duty Tweco Spray Master 350 with Flex Neck

The Tweco Spray Master 350 Amp MIG Gun is a legendary tool in the welding industry, renowned for its durability, ease of maintenance, and superior performance in harsh industrial environments. This specific model, the MS315FLX, features a 15-foot cable and a specialized Flexible Neck, making it an invaluable asset for welders who frequently encounter difficult angles, tight corners, or obstructed joints. Unlike standard rigid goosenecks, the flex neck can be adjusted to position the nozzle exactly where it is needed, ensuring optimal gas coverage and weld quality without forcing the operator into uncomfortable positions.

Designed with a Miller-style back-end connection, this gun is ready to plug directly into most Miller wire feeders and power sources, serving as a high-performance upgrade or replacement for standard OEM guns. The Spray Master series is famous for its air-cooled efficiency, rated at 350 Amps at a 60% duty cycle using CO2 gas. This makes it suitable for a wide range of applications, from structural steel fabrication and heavy equipment repair to general manufacturing and automotive work.

Maintenance is a breeze with the Spray Master design. It utilizes the widely available Tweco 11 Series contact tips and heavy-duty diffusers, which are engineered to withstand high heat and reduce downtime. The ergonomic handle is designed to fit comfortably in the hand, reducing grip fatigue during extended arc-on time. The cable assembly is robust, resisting cuts and abrasion while maintaining enough flexibility to maneuver around the shop floor. Whether you are welding mild steel, stainless, or aluminum (with the correct liner), the Tweco Spray Master 350 Flex Neck delivers consistent wire feeding and reliable arc starts, shift after shift.

Key Benefits for Industrial Users:

• Accessibility: The flex neck transforms difficult welds into routine tasks.


• Compatibility: Direct connection for Miller machines eliminates the need for adapters.


• Longevity: Built to withstand the rigors of heavy industrial use.


• Support: Uses standard, easy-to-find Tweco consumables.