Here's some screen shots I don't seem to have primary A rather primary b and secondary B not sure why? these weapons are really getting confusing I've also done screen shots in order of 123&4 of power draw if that helps someone to steer me .. but make it clear abbreviations just confuse things. Blaggerdy your screen shots are helpful as you can see my cockpit screen shot makes my weapons etc look a mess in comparison just not sure how to fix it.
thanks cmdr CM
As suspected, you are using the B fire group that has only missiles
Switch to fire group A
Edit:
So, you can have multiple firegroups, they become available as needed (you wont see a fire group C listed in the Fire Groups Tab if you have no hardpoints assigned to FireGroup B already)
Each firegroup has 2 triggers,
1 (main mouse button which is Left button, or main Joystick trigger, or main Right trigger if you play with controller) and
2 which is the secondary trigger (right mouse button, etc you get the idea)
So on the A column, you will need to set all weapons you want to fire in the A fire group, splint in Main trigger (1) or secondary trigger (2)
Usually you'd put all lasers on one trigger and multicannons on secondary trigger. Mixing lasers, multicannons and missiles on the same trigger is not really recommended due to ammo consumption, different projectile speeds and missiles being usually fixed or requiring lock before fire (and much lesser ammo requiring controlled fire)
So, with your specific outfitting, you should put on A fire group: lasers on (1) and cannons on (2). And you use lasers to strip shields, then use cannons to work on the hull
Then in B fire group you should put missiles on (1) and cannons on (2) and use this fire group only when the target lost shields.
Just an idea
(edited for clarity regarding triggers)