10401051 - Tweco Spray Master MS412 MIG Gun, 400A, 12ft, 1/16 Wire, Tweco Connection

Legendary Reliability for the Professional Welder

When you are burning heavy wire all day, you need a gun that can take the heat. The Tweco Spray Master MS412 is built exactly for that. Rated at 400 amps, this gun is a workhorse designed to handle the high heat of spray transfer welding without melting down in your hand. This specific model comes set up right out of the box for 1/16" wire, so you can get straight to work on those heavy plate jobs without swapping out liners or tips immediately.

The 12-foot cable gives you enough room to move around your workpiece without getting tangled in excess slack. We all know that feeding 1/16" wire can be tricky if the lead is too long or kinked, but the 12-foot length on the MS412 is the sweet spot for smooth feeding and reliable arc starts. The handle is designed with ergonomics in mind, featuring a comfortable grip and a trigger that's easy to manipulate even with heavy welding gloves, reducing hand fatigue over a long shift.

One of the best things about the Spray Master is how easy it is to maintain. It uses the classic Tweco consumables you likely already have in your toolbox. The conductor tube is durable, and the cable jacket is tough enough to survive being dragged over concrete and steel. If you are looking for a MIG gun that feels solid, stays cool, and delivers consistent performance on heavy-gauge steel, the Tweco Spray Master MS412 is the tool you want in your hand.