Originally Posted by Husanak

I would consider first dumping auto fire... but ya simple answer you can't use a fire_all command at all in anyway.

Long answer...
What you are going to have to do is put your weapons on a tray and bind them... here is a simple way too do it.

1) Pick a trey (I will use tray 4)
2) Line your weapon up on trey 4... Dual beam first then 3 cannons then 3 turrets
3) Input the bind commands into your chat box and hit enter

The first one will fire the weapon you have in the first slot on tray 4
/bind e "+trayexec 3 0"
/bind space "+trayexec 3 1 $$ +trayexec 3 2 $$ +trayexec 3 3 $$ +trayexec 3 4 $$ +trayexec 3 5 $$ +trayexec 3 6"

4) Go and fire at things with your cannons... and hold your beam overloads which you activate with e... you can sub what ever keys you want... you can also bind weapons too different keys what ever works for you.