The Chropi Rifle was a Rifle type built by Chropei (which used the "Chropi" spelling on its weapons), a Greek chemical company. It was designed by a team under Mr. Sotiris Sofianopoulos - apparently based on an original Greek-Cypriot design - and was proposed to the Greek Army in 1975. It was a simple and rather outdated design, clearly inferior to the Heckler & Koch G3 which was adopted (produced by the state-run EBO company). Rejection (as not up to the desired standards) came after a series of tests; the company, nonetheless, had created all necessary infrastructure for its production and a small number - probably a few dozen - produced was delivered to the Greek state and ended up in Greek Army storage facilities. A rifle is a firearm with a barrel that has a helical groove or pattern of grooves (rifling) cut into the barrel walls. ... This article does not adequately cite its references or sources. ... The word calibre (British English) or caliber (American English) designates the interior diameter of a tube or the exterior diameter of a wire or rod. ... The G3 (which stands for Gewehr 3, or Rifle #3) is a family of select fire battle rifles manufactured by Heckler & Koch. ... EBO (Standing for Elliniki Biomihania Oplon, or Hellenic Arms Industry) has been the main arms manufacturer of Greece. ...

References

• Theodoros Dimopoulos, "Opla Ellinikis Epinoisis kai Kataskevis (Greek-developed and produced Arms)", article in Greek Panzer magazine, issue 24, January-February 2006.