The Puranas and The two Ithihasas Ramayana and Mahabharata are not fiction.
While Purana is ancient history, Ithihasas ,meaning ‘this is how it happened’.

Mahabharata Weapons User Manual, Times of India report.
Persons,events mentioned in them stand the test of modern scientific scrutiny.
I have shared articles on them in this blog.
Sudarshan Chakra.

Vishnu with His weapons, including Sudarshan.

Sudarshan chakra model found,Indian Express report.
Vishunu’s Sudarshan Chakra Working Model Found
Weapons mentioned in Indian texts can be classified into two.
Astra,the weapons that are effective with Mantra.
Sastra, traditional weapons like Sword,Spear.
Reference.
