Key Specs

Best For

• MIG guns where the trigger is cutting out, double-clicking, or not feeding wire consistently
• Shops that want to repair the gun instead of replacing the whole assembly
• Maintenance bins for common failure items (trigger switches are wear parts)
• Troubleshooting scenarios where you’ve already ruled out:
  • Loose liner/lead connections
  • Broken trigger leads at the strain relief
  • Machine-side trigger circuit issues

Pros & Cons

Pros

• Replaces a common failure point without buying a full MIG gun
• Helps restore consistent starts and wire feed (when the trigger is the root cause)
• Small, low-downtime repair if you already know the handle style
• Good “keep one on the shelf” part for production environments

Cons

• Fitment is not universal—must match your gun/handle style (Unknown (Verify))
• Electrical rating and connector style not listed on the store page (Unknown (Verify))
• Installation may require opening the handle and routing leads correctly
• If the issue is in the lead/machine trigger circuit, a new switch won’t fix it

Where to Buy

ArcWeld.store product page:

94R Tweco MIG Gun Trigger Switch Assembly

$45.64

In Stock

View Product

Bottom Line

If your MIG gun is acting like it has a “bad trigger,” this is a practical repair part—but only after you confirm fitment for your exact gun/handle.