Lincoln MAGNUM Pro Curve 300 MIG Welding Gun

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Lincoln MAGNUM® Pro Curve™ 300 MIG Welding Gun


Semiautomatic Air-Cooled Guns

Magnum® PRO Curve™ guns for MIG or flux-cored welding combine our classic curved handle with our Copper Plus® contact tips and Magnum® PRO gun expendables to deliver long hours of fabrication welding with less frequent tip and gun expendable parts changes.

  • Industrial Grade Construction
  • Lincoln Electric Copper Plus® Contact Tips - Larger tip diameter and mass improve heat dissipation to increase tip life.
  • Curve™ Handle Design - Our Curve™ handle is lightweight and balanced, providing a comfortable grip to reduce fatigue.
  • Rotating Gun Tube and Gun Hanger Clip - Allow any number of hand positions to reduce fatigue or fit into tight spaces.
  • Simplified Expendable Parts Selection

Download Torch Catalogue


  • MIG, Pulsed MIG, Flux-Cored
  • Wire Diameter Range
  • .025-3/64 in. (0.6-1.2 mm)

    Cable Length Options:

    • 10 ft. (3m) - K2951-1
    • 15 ft. (4.5m) - K2951-2
    • 15 ft. (4.5m) - K2951-2-10-45 Ready-Pak (Includes Gun Connector K466-10 for LF-72-74, LN-25® Pro, Power Feed® 25M)
    • 15 ft. (4.5m) - K2951-2-6-45 Ready-Pak (Includes Gun Connector K466-6 for PowerMIG)
    • 25 ft. (4.5m) - K2951-4

    What's Included?

    • Contact Tip (Qty. 1) (KP2744-045)
    • 0.625 in. (15.9 mm) Thread-On Gas Nozzle with 1/8 in. (3.2 mm) recess (KP2742-1-62R)
    • Thread-On Diffuser (KP2746-1)
    • Gun Liner (KP44-3545-15)

      Non-stock Item - Please allow two week lead time*