I am holding a Taurus factory magazine that came with my PT92 AFS. The left side of the magazine tube reads, "PT92/99/917 CAL. 9mm - MADE IN BRAZIL". That tells me the answer to your question - yes, magazines for a PT92 are interchangeable with the PT917. As for the grips, I am not 100% sure, but if I were a betting man (and I am) I would say that the grips are also interchangeable between the two models.