Starports that sell Railguns?

[Teiji]

Preferably Hatred class and above, if possible.

[Geek]

Look for Military stations such as Warterloo or Da Vinci.

[Staubkappe]

Isn't the best railgun availible the one you can research on your own?
I use the mk2 atm and cant wait to get the mk3, which seems damn op to me.

[Geek]

It is debatable. It does very slighly more hull damage, but much less shield damage.