The rules do not seem very clear to me.
I understood the "recommended skill" counts speciffically for accuracy
and fire delay for all weapons.
“There is a skill requirement for every weapon. If your character does not meet the requirements for every level he lacks he loses 15% accuracy and takes 1 fire delay longer to reload. ”
In the rules, there is repair skill for damage equation, comp ops + perception for chance of setting up the bomb. But it does not say that any of these skills is recommended
are given by strength and dex, but it does not say if these are the recommended skills for accuracy.