You don't need a quick connect fiiting unless thats what you have on your Genesisi.
The firring is threaded into your regulator. They make OPD fittings that will thread into it.
You may not find one in stores, but they can be ordered for around $10-12.
If you can find an old regulator hose with the fiiting, you can use that. Just don;t bypass the regulator.