Get a new buttstock. Most modern stocks from reputable companies have QD sling mounts built into the stock. I have no idea why your buttstock wouldn’t have a QD point, unless it is a budget or old stock.
I think it's a basic MIL-SPEC stock. This will be the first AR I've owned so I didn't go high end . The idea is to see how I use it and to figure out what I want. Then I can either buy a new one if it exists or build it.