There are sling studs for flush cups, so basically you can mount something like Harris if you have flush cup on the bottom of forend.
There are also split bipods, that mount on each side of forend but they're picatinny, M-Lok and probably also Keymod and/or some other system.
Not aware of split bipod attaching to sling stud, if you had you could mount it (but I'm somewhat sceptical whether it would hold).