I don't have the model, but after looking at the sprue and pictures online, I think it could be done, it would just be a huge pain to reconfigure for a game. What I would do is put magnets on the back of the ion rifles, and then remove the normal joins where they connect to the side of the drone undercarriage. I would drill straight through the undercarriage on the drone, and through the ion rifles where they would attach to the drone. It would probably require embedding some extra plasticard behind the ion rifles to make the magnetic join. I would put brass road through the drones to attach when needing interceptors, and then have a spare piece of rod to run through all the ion rifles when attached to the quad-ion turret. It would be a pain, but I think it would work, and wouldn't be all that noticeable if the brass rod was sprayed to match the ion rifle color, and was cut flush with the edge of the plastic.
It would be time consuming, but it would probably also be a little bit more resilient than the average magneto-job is, since a lot of people put too much weight on the magnets (myself included).