The 9K81 S-300V "Antey-300" (Russian "9К81 С-300В Антей-300" – named after "Antaeus", NATO reporting name "SA-12 Gladiator/Giant") varies from the other designs in the series. This complex is not part of the C-300, including is designed by another developer. It was built by Antey rather than Almaz, and its 9M82 and 9M83 missiles were designed by NPO Novator. The "V" suffix stands for "Voyska" (ground forces). It was designed to form the top tier army air defence system, providing a defence against ballistic missiles, cruise missiles and aircraft, replacing the "SA-4 Ganef". The "GLADIATOR" missiles have a maximum engagement range of around while the "GIANT" missiles can engage targets out to and up to altitudes of around . In both cases the warhead is around .