Arsenal is a licensed US manufacturer of some of the finest, most authentic semi-automatic AK47 style sporting rifles made in Bulgaria. Available with either forged and CNC milled receivers or stamped receivers, they feature hammer-forged, chrome lined barrels and strict quality control in calibers 7.62x39mm, 5.56x45mm (.223 NATO), and 5.45×39.5mm. Arsenal Inc. utilizes the latest technology and materials while upholding the legendary standards of the world-famous Circle 10 factory, Arsenal of Bulgaria.arsenal arms ak 47 reviewwhat is an arsenal of guns