Unless you have extra bits or are extremely good.
Here's the problem. The quad ion gun uses what is basically four ion rifles. The interceptor drones use the same four ion rifles, but in a radically different configuration. There is no way to assemble both the rifles and the quad gun.
This is a big problem for magnetizing. All other problems - the nose weapon options the rear missile pod issue, even the fact that the same bits are used for the wing jets as the interceptor drones - were surmountable, but this? This is the presence or absence of a major weapon. It could have been a razorshark, even if the wings had odd semicircular cut-outs rather than extra rockets (actually, it would have looked pretty neat). It could have been a razorshark even if the missile launcher was on the tail, rather than under the nose. However, it's not a razorshark without the quad ion gun, and it's not a sunshark without the interceptor drones.
I'd say "well played, GW, well played," but I don't actually think they did it on purpose. We already know that models are designed by the creative team. This was probably just the most efficient way to cast it.
Eh... it's not a big deal, actually. It's not like I was ever actually going to use the razorshark. The sunshark is by far a better choice, IMHO. Neither are game-breaking, but I really think that the interceptor drones make the quad gun redundant (one quad ion gun is better than two twin-linked ion rifles, but only barely, and the rest of the bomber's armament tips the balance).
If anyone disagrees, please post here. I'd love to see if anyone can figure out a way to reconfigure this kit for maximum utility!