This one is a bit tricky. In the core book, Rapid Fire was listed as a Super-Speed power which gave you an Autofire Blast with ranks equal to your Super-Speed rank with an implied Flaw (made explicit in an ORQ) that many small objects need to be onhand and that it's limited to a maximum range of one range increment (throwing distance). UP changed this to 2/3 the rank of Super-Speed, probably noting that the "Flaw" wasn't very likely to come up. Currently, the rules just have the Core version listed.
On a side note, would it be possible for the attacks gained from Super-Speed feats to be added to the Special tab?
On a side note, would it be possible for the attacks gained from Super-Speed feats to be added to the Special tab?