I started playing Epic scale now.

After all.
Armada? BAH! Why fly a small stardestroyer when you can fly a HUGE CR90;)

But my question

If i get Quad Laser Cannons for one of my hardpoints, does it fire left AND right or do I need to get two cards to cover it?

(I would guess not, but better to be sure)

It covers both left and right arcs.

To clarify even further, you can only attack with each equipped hard point once per round. So while you may attack out of either arc, you may only fire it once.

And it only works on the section it's equipped on.

So If you have quad laser cannons on the back section, and not the front, then it fires from the back section arcs only