Steel MIG guns

Miller MIGmatic M-100 / M-150 MIG Guns

M-100 and M-150 are light industrial Miller MIGmatic guns. Miller lists an MDX consumables conversion kit that lets M-100 and M-150 front-end nozzles and tips move toward the MDX standard-duty consumable family.

Light industrial Steel catalog current legacy bridge
Miller MIGmatic M-100 / M-150 MIG Guns

Processes

  • MIG (GMAW)
  • Flux-cored (FCAW)

Wire Capacity

.023 - .045 in. (0.6 - 1.2 mm)

Cable Lengths

10 ft. for M-100; 15 ft. for M-150 in the full-line catalog

Compatible Machine Paths

Lifecycle and Replacement Notes

  • M-10 / M-15 are earlier legacy guns.
  • M-100 / M-150 are the bridge generation for light industrial Miller machines.
  • MDX-100 is the current replacement direction for the 142 / 211 class machines.

Gun Models

Model Stock # Cable Output Wire size Consumables Buy
M-100 248282 10 ft. (3 m) 100 A .023 - .045 in. (0.6 - 1.2 mm) Amazon link: Needs verification.
M-150 249041 15 ft. (4.6 m) 150 A .023 - .045 in. (0.6 - 1.2 mm) Amazon link: Needs verification.

Consumables and Replacement Parts

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Item Part # Description Category Buy
Gun 220606 M-100 Gun, with friction terminals, 10 ft., 100 A, .030-.035 in. Gun assembly --
Gun 248282 M-100 Gun, 10 ft. (3 m), 100 A, .030-.035 in. Gun assembly Amazon link: Needs verification.
Gun 249039 M-150 Gun, 10 ft. (3 m), 150 A, .030-.035 in. Gun assembly Amazon link: Needs verification.
Gun 249040 M-150 Gun, 12 ft. (3.7 m), 150 A, .030-.035 in. Gun assembly Amazon link: Needs verification.
Gun 249041 M-150 Gun, 15 ft. (4.6 m), 150 A, .030-.035 in. Gun assembly Amazon link: Needs verification.
1 246372 Slip-type nozzle, .500 in. flush copper; 169715 brass optional Nozzle Amazon link: Needs verification.
1 226190 Slip-type flux-cored nozzle Nozzle View on Amazon
2 087299 .023 in. contact tip, screw type, 1.125 in. Contact tip View on Amazon
2 000067 .030 in. contact tip, screw type, 1.125 in. Contact tip View on Amazon
2 000068 .035 in. contact tip, screw type, 1.125 in. Contact tip View on Amazon
2 000069 .045 in. contact tip, screw type, 1.125 in. Contact tip View on Amazon
3 170470 Retaining ring Retaining hardware View on Amazon
4 169716 Contact tip adapter Diffuser / adapter View on Amazon
5 246373 Tube head Gooseneck View on Amazon
7 246082 Handle Handle View on Amazon
8 246376 Blue trigger switch Trigger View on Amazon
9 079878 Housing plug and pins Connector View on Amazon
10 242833 Feeder connector Power pin View on Amazon
11 079974 O-ring, .500 ID x .103 cross section rubber O-ring Amazon link: Needs verification.
12 194010 .023/.025 in. monocoil liner kit, 15 ft. Liner View on Amazon
12 194011 .030-.035 in. monocoil liner kit, 15 ft. Liner View on Amazon
12 194012 .035-.045 in. monocoil liner kit, 15 ft. Liner View on Amazon
13 079975 O-ring, .187 ID x .103 cross section rubber O-ring Amazon link: Needs verification.
Conversion 1880269 M-100/M-150 to MDX-100 nozzles and tips conversion kit for .030 and .035 in. wire Conversion kit --

Related Support Paths

Source: Miller Electric 2026 Full-line Catalog (source-bf756b1d2b74, page 22; source-dbbad08c51df, page 32). Amazon links are kept separate from compatibility data.

Miller Catalog Accessories

These accessories are placed here only when the Miller catalog names this machine, torch, feeder, or family path. Verify plug style, voltage, package, and serial-specific details before ordering.

PartAccessoryCatalog fitmentSource / path
234607 MIGmatic M-Series Gun Consumable Kit M-100 / M-150 gun kit for .023 in wire. Catalog p. 125
Open support path
234608 MIGmatic M-Series Gun Consumable Kit M-100 / M-150 gun kit for .030 in wire. Catalog p. 125
Open support path
234609 MIGmatic M-Series Gun Consumable Kit M-100 / M-150 gun kit for .035 in wire. Catalog p. 125
Open support path

MIG Quick Shop Tip

Shop tip: check drive-roll tension, liner condition, and contact-tip size before replacing the whole gun. Many feed problems start with setup or a wear item.

Quick Support Links

The most useful nearby paths, kept short for fast scanning.

Need More Help?Troubleshooting, FAQs, and blog guides

What does this part do?

A contact tip guides the MIG wire and carries welding current into the wire. If it wears, burns back, or does not match the wire size, feeding and arc stability can get worse fast.