I keep seeing that the Zastava is an upgrade to a WASR. If one has a good WASR (everything is straight and properly assembled), this is not an upgrade. The thicker receiver only means more weight as the WASR can handle thousands of rounds without issue. I am pretty sure the Zastava hasn't a chrome-lined barrel. That is a bid step down from the WASR. The absence of the side rail on the Zastava is certainly a step down as well. Compared to a properly inspected WASR, the Zastava's only advantage that I can think of is going to be finish.