The Chropi rifle was developed in the mid-1970s, when the Greek Army was looking to update its arsenal. It was designed by Sotoris Sofianopoulous of the Chropei firm, primarily a pharmaceuticals company that had limited experience of military hardware production. A small number of prototype models were produced and submitted to testing. It was rejected in favor of the more modern Heckler & Koch G3. The prototypes remained in military storage.
The Chropi was a basic gas-operated assault rifle chambered for the 7.62×39mm cartridge. It was made to a low standard, primarily from metal stampings and wooden furniture. There was no trigger guard or rear sight.
- Theodoros thimopoulos, "Opla Ellinikis Epinoisis kai Kataskevis (Greek-developed and produced Arms)", article in Greek Panzer magazine, issue 24, January–February 2006.