Primary regulator conversion

I've got an older tap-rite primary regulator with single gauge (no high pressure that shows tank level). I'm setting up a keezer and want to pick up a new primary with both gauges so that I don't wind up running out of gas at inopportune times. Wondering if I can disconnect the tank connection from my current primary and convert it to a secondary regulator to have in the keezer for low pressure serving? That connection says left-hand on the back of the regulator.

If I can convert it what fitting am I looking for?

Don't bother the gauges don't show a enough movement to be that precise just use a scale,your tank's tare weight + the lbs of CO2. This method will NEVER leave you disappointed

That's a good idea! Hadn't thought about that.

The new primary regulator is cheaper than buying a secondary though, so I'm still wondering if I can pull off the tank connector and add a barbed connector in its place?

Yep, you just need left hand threaded nipple, Beverage Equipment Corp. item #55496-2 $2.90 a piece best price on line.

Awesome thanks!

Would recommend get a couple I regret not buying more started with 4 reg up to 10 now.