It was neither a copy of an AK or the AR-18. It used an AK type piston with a AR-15 type bolt and carrier. It was a select fire weapon designed for export for armys. They did not get any big contracts, so it was not mass produced. The action is pretty much identical to the Daewoo DR 200. Here is a link to some info on the rifle and pistol. http://www.biggerhammer.net/armpistol/manual/