K2655-3 - Magnum PRO 550 Semi-Automatic MIG Gun, 20 ft, Air-Cooled

Comfort and Power in Your Hands

Welding at high amperages all day can take a toll on your body, but the Lincoln Electric Magnum PRO 550 is designed to change that. This 20-foot MIG gun combines raw industrial power with the welder-focused ergonomics you need to stay comfortable during long shifts. The secret lies in the Comfort Grip handle. It features a balanced, barrel-style design that fits naturally in your hand, allowing for multiple grip positions. Whether you are welding out of position or running long beads on the bench, the lightweight handle reduces wrist strain and overall fatigue, letting you focus on the puddle rather than the weight of the torch.

Don't let the comfort fool you; this gun is a beast. With a 100% duty cycle at 550 amps, you can run hot and fast without worrying about the gun overheating or melting down in the middle of a critical joint. It is built to handle everything from standard MIG wires to heavy flux-cored wires up to 1/8 inch thick. The 20-foot lead gives you the freedom to move around large workpieces—like trailers, heavy machinery, or structural beams—without constantly dragging your wire feeder or welder across the shop floor.

Frustrated with burning through contact tips? The Magnum PRO 550 uses Lincoln's Copper Plus tips. These aren't your average tips; they are bigger and dissipate heat much faster, meaning they last longer and don't fuse to the wire as easily. This saves you trips to the tool crib and keeps you welding longer. The consumables are easy to swap out, and the heavy-duty nozzle stands up to spatter and heat.

Whether you are in a shipyard, a heavy equipment repair shop, or a structural steel plant, the K2655-3 gives you the reach, the power, and the comfort to get the job done right. It connects easily to your Lincoln feeder and is ready to tackle the toughest jobs you can throw at it.