10401061 - Tweco Spray Master 400A MIG Gun, 12ft, Miller Style, 1/16 Wire

Tweco Spray Master 400A MIG Gun – Miller Style

Welders know that heat is the enemy of equipment longevity and comfort. The Tweco Spray Master MS412M-116 tackles this head-on with its legendary air-cooled design that stays comfortable to hold even during high-amperage spray transfer welding. This 400 Amp MIG gun is a workhorse, built to push 1/16-inch (1.6mm) wire all day long without overheating or jamming. If you are running a Miller welder and need a gun that can handle the heat of heavy plate welding, this is the upgrade you've been looking for.

The 12-foot cable length is ideal for bench work and fabrication cells where wire feeding smoothness is critical. Longer cables can sometimes cause drag on heavy wires, but the 12-foot length ensures positive feeding for 1/16" aluminum or steel wires. The Miller-style backend plugs directly into your feeder, ensuring a solid electrical connection and leak-free gas flow. No adapters, no hassle—just plug in and weld.

Key features for the professional welder include:

• Superior Cooling: The heavy-duty conductor tube and cable design pull heat away from the front end, meaning your contact tips last longer and your hand stays cooler.
• Rugged Build: From the impact-resistant handle to the metal-jacketed conductor tube, every part is built to survive drops, drags, and sparks.
• Easy Maintenance: Uses standard Tweco consumables that you likely already have in your shop. The simplified design allows for quick liner changes and tip replacements.

Whether you are fabricating heavy machinery, welding structural beams, or performing hardfacing, the Tweco Spray Master MS412M-116 gives you the control and durability you need to lay down perfect beads shift after shift.