Theoretically you could launch the Hijacker on a D12-3. Practically, I wouldn't try it.
If you build it at 16 oz, or less, used a 6 ft launch rod (6ft from tip of rod to launch lug) and had no wind, you might be able to make it work.
It would get 112 ft altitude, leave the rod at 30 ft/sec and be coming down at 38 ft/sec and at approximately 88 ft. when the ejection charge goes off, if the charge was exactly on time.
I would say you are more likely to lawndart the rocket then have a successful flight.