10401064 - Tweco Spray Master 400A MIG Gun, 20ft, Miller Connection, 1/16 Wire

Tweco Spray Master: The Industrial Standard for MIG Welding

Upgrade your welding setup with the Tweco Spray Master MS420 MIG Gun, a premium air-cooled torch engineered for professional welders who refuse to compromise on quality. This model is specifically configured with a Miller back-end connection, ensuring instant compatibility with a wide range of Miller power sources and wire feeders. Rated at 400 Amps, the MS420 is a workhorse capable of sustaining high-heat spray transfer and globular transfer modes, essential for deep penetration and high deposition rates.

Extended Reach and Durability

The inclusion of a 20-foot (6.1 meter) cable assembly sets this gun apart from standard 10 or 15-foot models. This extended length is invaluable in industrial settings where access is difficult or where the welder needs to navigate around large fixtures. Despite its length, the cable maintains excellent wire feedability thanks to Tweco's high-quality liner and cable construction, which resists kinking and crushing. The outer jacket is tough enough to withstand abrasion from concrete floors and sharp metal edges.

Optimized for Heavy Wire

Pre-configured for 1/16" wire, this gun is ready for heavy fabrication tasks immediately. Whether you are running large diameter solid wire for aluminum or steel, or flux-cored wire for structural applications, the MS420 delivers consistent electrical conductivity and gas coverage. The Spray Master design features a simplified front-end consumable system, allowing for quick changes of contact tips and nozzles, minimizing downtime. The conductor tube is rotatable, allowing the welder to adjust the angle for better access to tight joints. Invest in the Tweco Spray Master MS420 for a blend of traditional toughness and modern ergonomic design.