The P-3 is capable of carrying up to 20,000 lb (9,071 kg) of ordnance. It has an internal bomb bay and can carry AIM-9 Sidewinders, Harpoon anti-ship missiles, depth charges, torpedoes or mines.
Never carried the AIM-9 except for test only... and it also carries the AGM-65F Maverick and AGM-84K SLAM-ER.