[Tx Firefighter]

I used mine for flux cored for a year or two, then converted it.

I bought the conversion kit at Home Depot for like 100 bucks. I'm pretty sure I didn't install any solenoid. I remember it was already inside the machine.

It does click when you pull the trigger.

If yours is different, you may think about getting a Lincoln brand conversion kit. It will pay for itself in Argon savings by not flowing all the time.