Systems and vehicles S-300PM1 S-300 PMU1 SA-20 A Gargoyle A
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The next big evolutionary step in the S-300P air defense missile system was the introduction of a new export variant the S-300PMU1/SA-10D, in 1993. The S-300PMU1 was developed between 1985 to 1989 and was first shown at the 1992 Moscow Air Show.