Possible OOB or Code Issue?

[Imp]

The obvious way apart from coding issues is a unit class that allows passengers to fire, more complicated perhaps just the first slot weapon as riding. Can now do dismountable bikes cavalry even skis and give the transport no weapon.
Of course someone would then say can pasdengers fire from my APC’s halftracks, short answer is probably no it’s ineffective useful for close defence only passengers help with spotting and closes combat already.