The parade, which is held to mark the National Army Day, was attended by foreign military attaches and experts.
Tasnim reports that two S-300 radar systems, its carrier and command vehicles, as well as a crane for lifting the missiles, had been shown during the ceremony.
The launchers and the missiles themselves, however, were not shown.
The Russian S-300 long range surface-to-air missile systems recently procured by Iran were displayed in public for the first time alongside 35 other military equipment units belonging to the Iranian army's Khatam al-Anbia Air Defense Base, the Mehr news agency said.
#Iran shows off parts of S-300 air defence system that they recieved from #Russia during parade on Army Day pic.twitter.com/eQxW929Aea
— Hassan Ridha (@sayed_ridha) 17 April 2016
The first batch of the S-300 surface-to-air missiles capable of downing jets was delivered to Iran on April 11, according to Russian Deputy Prime Minister Dmitry Rogozin.
In April 2015, Russia resumed talks on S-300 deliveries following a framework agreement on a landmark pact that aimed to ensure the peaceful nature of Tehran's nuclear program.
