1) Lapis Laser
Deals non-elemental magic damage to all party members.
2) Grab and Immobilize
Carry Armor will pick up two random targets, immobilizing and damaging them. Defeat the arms to free the party members.
Use Lightning-based Attacks
Since Carry Armor is weak to Lightning, it is best use powerful lightning attacks like Bolt3 to take it out. You can also use Magic Hammer to reduce its MP so that it can no longer use Lapis Laser.
Final Fantasy 7 (FFVII) Recommended Article List