RM315-45 - 300A Tregaskiss Style MIG Gun for Miller Feeders - 15ft .045

Built Tough for the Daily Grind

If you are looking for a MIG gun that can take a beating and keep on welding, this Tregaskiss-style 300 Amp gun is the answer. We know that in the real world, equipment gets dropped, dragged, and stepped on. That's why this replacement gun is built with a rugged outer shell and heavy-duty cable protection. It’s designed to feel solid in your hand without being overly heavy, giving you the control you need for those long, continuous welds. The 15-foot lead is a game-changer if you're used to shorter whips, giving you the freedom to move around your workpiece without dragging your feeder halfway across the shop.

Compatibility is key, and this gun is ready to rock with your Miller machine. It features a direct-connect Miller backend, so you don't have to mess around with adapters or tricky installations. Just plug it into your Miller feeder, and you are good to go. It comes set up right out of the box for .045" wire, which is perfect for those heavier structural jobs where you need to lay down a lot of metal fast. The liner is already installed, the tip is tight, and the nozzle is ready for gas.

The best part? You don't need to hunt down special parts when it's time for a tip change. This gun uses the same Tregaskiss-style consumables you likely already have in your toolbox. Whether it's the contact tips, nozzles, or diffusers, everything is standard. This means less downtime waiting for parts and more time burning wire. It’s the perfect balance of performance, durability, and value for any welder who demands reliability from their gear.

Stop fighting with worn-out equipment. Upgrade to a gun that works as hard as you do. With excellent wire feed consistency and a comfortable grip, you'll notice the difference in your weld quality and your wrist comfort at the end of the day.