The Trello says that 0.14.2 has railguns planned, or at least suggested for the update. Now I like the idea of a multi-part weapon, and the whole "deals dmg while penetrating ship" part. I'm just putting out my own (minor) thoughts on the other aspects.
I agree with Loader and Launcher being necessary, but as a fan of historic artillery and such, I'd just like the launcher to be renamed as Breach and Barrel Assembly (or something like that). I also approve of the extender's functions, but I'd say that capacitor is more appropriate. Capacitors, for any who don't know, store power (the more capacitors, the more power discharged per shot, the faster the speed and penetration power of the projectile)
Honestly, very minor suggestions. I just feel that these changes would be more appropriate