The first flight of the Iris at this year's LDRS was a 2 stage with 9 Cesaroni I540 hammers in the booster staging via radio control to a 7600 ns M3000 white which inadvertently turned out to be closer to an M5000. Main deployment was also by RC although 2 altimeters were along for backup. The Triplefire RC board is available from Transolve.