It would depend on how the buffer tube is attached to the receiver. I could not find any information regarding that rifle and the stock adapter. I recommend contacting Sig Sauer in regard to a compatible folding stock adapter.
The buffer tube attaches to the receiver via threads, exactly the same as a standard AR15 receiver. It doesn’t have/use an end-plate like the AR system, instead it’s a kind of comically shaped end receiver, the buffer tube threads into.