The Antey 9K33 "Osa" (Russian Оса â wasp, NATO reporting name SA-8 "Gecko") is a highly mobile, low-altitude, short-range tactical surface-to-air missile system.
9K33M3 "Osa-AKM" (US DoD designation SA-8B "Gecko Mod-1") was introduced in 1980 with the maximum range extended to 15 km (9 miles) and maximum altitude to 12 km (40,000ft) as explained above. Most Osa-AKM systems also feature an IFF antenna.