I really doubt this. More likely is that Zastava is reusing serial numbers.
Exactly. It is common for slightly different models to have the same serial number. I thought this had been debunked before. One gun an AKM or variant; another a semi-auto variant with the same serial number.
Simple confusion of same serial numbers, slightly different models, issue.
You can convert semi to auto.
I think the story works politically for us. Obama arming terrorists like he did in Syria.