My guess would be that handwavium being somewhat sensitive to: a) the original purpose of whatever it is applied to; and b) the intentions of the person applying it; that it won't do anything to an actual weapon and will malfunction significantly when applied to something intended to do harm.
If someone wants to fit a perfectly standard weapon to their ships then by all means this is possible, but it means that most of the weapons in space fall into one of two catagories:
1. Perfectly ordinary firearms and missiles that are largely ineffective against anything that has a hull enhanced with handwavium.
2. Weirdass whackiness - Boy/Girl Guns, Meta-Cometary Accelerator Cannon, Banana Bomb Clusters.
D for Drakensis
You're only young once, but immaturity is forever.
If someone wants to fit a perfectly standard weapon to their ships then by all means this is possible, but it means that most of the weapons in space fall into one of two catagories:
1. Perfectly ordinary firearms and missiles that are largely ineffective against anything that has a hull enhanced with handwavium.
2. Weirdass whackiness - Boy/Girl Guns, Meta-Cometary Accelerator Cannon, Banana Bomb Clusters.
D for Drakensis
You're only young once, but immaturity is forever.