K2951-1 - Lincoln Magnum PRO Curve 300 MIG Gun, 10ft, Lincoln Connector

Lincoln Electric Magnum PRO Curve 300 Semi-Automatic MIG Gun (K2951-1)

The Lincoln Electric Magnum PRO Curve 300 is a premium air-cooled MIG gun designed for high-performance semi-automatic arc welding. Engineered for industrial fabrication environments, this 300-amp gun (rated at 60% duty cycle with CO2) integrates Lincoln's advanced Magnum PRO expendable parts system with an ergonomically superior handle design. The K2951-1 model comes equipped with a 10-foot cable and a standard Lincoln-style backend connection, making it a direct replacement for many Lincoln wire feeders.

At the core of this gun's performance is the Magnum PRO consumable system. It utilizes Copper Plus contact tips, which feature a larger diameter and greater mass than standard tips. This design significantly improves heat dissipation, extending tip life and maintaining stable electrical conductivity over long welding sessions. The patent-pending Anti-Seize thread design on the contact tips and diffusers prevents parts from fusing together, simplifying maintenance and reducing downtime. Furthermore, the gun is designed for simplified inventory management; while it is a 300A gun, it is compatible with Magnum PRO 350A and 550A consumables, allowing shops to standardize parts across different gun models.

Mechanically, the gun is built to withstand harsh shop conditions. It features a rotating gun tube and a convenient gun hanger clip, allowing the operator to adjust the gun orientation for optimal access in tight spaces or complex fixtures. The four-trigger lead configuration ensures reliable actuation and facilitates fast field repairs if necessary. Capable of feeding wire diameters from 0.025" to 5/64" (0.6-2.0 mm), the Magnum PRO Curve 300 is versatile enough for MIG, Pulsed MIG, and Flux-Cored applications.