k471-1 - Lincoln Magnum 400 Semi-Automatic MIG Gun, 400A, 10ft, .035-.045

Comfort and Performance for Professional Welders

When you are under the hood for hours at a time, your equipment needs to work with you, not against you. The Lincoln Electric Magnum 400 MIG Gun (K471-1) is built with the operator in mind, combining heavy-duty power with Lincoln's classic ergonomic design. Rated at 400 amps, this gun is designed to withstand the greater heat levels generated by higher amperage applications while keeping your hand cool and comfortable. The 10-foot cable length is perfect for bench work or production cells where the wire feeder is close at hand, minimizing cable clutter.

The hallmark of the Magnum series is the curved handle, which is lightweight and balanced to provide a sure, confident grip. This balance significantly reduces operator fatigue, allowing for steadier hands and better welds over long shifts. The gun comes ready to weld with .035" to .045" wire, covering the most common sizes for MIG and gas-shielded flux-cored welding. Whether you are running solid wire on mild steel or flux-core on heavy plate, the Magnum 400 delivers consistent wire feeding and arc stability.

Durability is built into every inch of this tool. The rugged strain relief system protects the cable liner and prevents acute angles that can cause feed issues. The trigger is designed to withstand the heat and spatter that kills lesser guns, and the rubber cable jacket is tough enough to be dragged over concrete and steel without failing. If you need a reliable replacement gun that fits your Lincoln feeder and feels right in your hand, the K471-1 is the industry standard for a reason.