You can add studs if you wish. There are threaded studs available.
I had the DSP version, and while I could attach a sling, it didn't have the proper studs to fit a bipod. There are bipods available that clamp to the barrel, but I wasn't comfortable with that idea (I can only assume that would negatively affect accuracy?).
Anyhow, my solution was to replace the stock with one with studs, in my case, a Hogue Rubber Overmolded.
The bipod I'm currently using is a Rockmount 9-13" model because I didn't know any better. Now that I know they are a Harris knockoff, I have a Harris coming in the mail, and I will be able to compare shortly.
Having said that, I have used said Rockmount on my .22 LR, .223 Rem and .30-06 Spld and haven't had any issues. It still works fine.