Hardpoints

From Command and Conquer Wiki

A basic upgrade available from the GDI airfield to both the Steel Talons and regular GDI formations, hardpoints increase weapon carrying capacity of Orca Gunships and Firehawk attack jets. These additional hardpoints increase the ammunition capacity of the Orcas and Firehawks by 50%, with no loss in performance. However, the added capacity translates to additional time needed to fully rearm each Orca of Firehawk after a sorty.

ZOCOM's operations in Red Zones often require more durability and finesse than sheer firepower; so they eschew optional harpoints in favor ceramic armour.