K3478-2 - Lincoln Magnum PRO AL Pistol Grip Push-Pull Gun 25ft Air-Cooled

Premium Aluminum Welding with the Lincoln Magnum PRO AL

The Lincoln Electric Magnum PRO AL Pistol Grip Push-Pull MIG Gun (K3478-2) is engineered to transform your aluminum welding operations. Designed specifically to address the challenges of feeding soft aluminum wire, this air-cooled gun features a robust push-pull system that works in concert with your welder's wire drive. By pulling the wire at the gun end while the feeder pushes, friction is drastically reduced, ensuring a smooth, consistent arc and virtually eliminating the frustration of birdnesting and wire deformation.

This 25-foot model offers excellent reach for large fabrication projects, allowing welders to move freely around the workpiece without moving the power source. Despite its heavy-duty capabilities—rated for 220 amps at 60% duty cycle—the gun remains lightweight and ergonomic. The well-balanced pistol grip fits comfortably in either hand, reducing operator fatigue during long shifts. A recessed adjustment dial at the rear of the handle allows for precise wire feed speed changes on the fly, positioned to prevent accidental bumps during welding.

Maintenance and uptime are key focuses of the Magnum PRO AL design. The gun utilizes Lincoln's industry-leading Magnum PRO consumables, including Copper Plus contact tips which dissipate heat more effectively than standard tips, extending consumable life. The 550A rated front-end parts are standard, providing exceptional durability even when the gun is used at its maximum air-cooled rating. Additionally, the Quick-Change Liner system allows for rapid replacement without disassembling the entire gun, and the removable drive roll cover gives instant access to the internal drive mechanism.

Key Features for Industrial Fabrication

• Superior Feeding: Advanced push-pull mechanics ensure soft aluminum wires (4043, 5356) feed reliably over 25 feet.
• Ergonomic Design: Pistol grip style reduces wrist strain and improves maneuverability in out-of-position welds.
• Industrial Compatibility: Comes with a 12-pin connector for direct attachment to modern Lincoln PowerMIG and Flextec systems (adapter available for older 7-pin models).