A copy of the innovative Nazi German MP-40, but different in a couple of ways. The gun features a curved magazine and a longer length compared to its MP-40 grandfather. The M56 is chambered in 7.62x25, a common round among the budding communist block, which had more penetration value than 9mm Parabellum. It was manufactured in Kragujevac, SR Serbia by the Zastava factory, and was in service until 1992 when the inevitable breakup occurred. It saw use on all sides of the wars, from the beginning with the Slovene Police and the JNA, to the Armija BiH and VRS, and to the HVO and RSK. Nowadays, you’ll find parts kits scattered across the internet, along with detailed plans on how to construct the receiver.