The M90’s barrel has long been threaded to the common AK fourteen×one LH pitch and ships with an average AKM-type slant brake. It's a Yugoslavian-sample facet scope rail similar to the ZPAP for mounting optics. and received quite very hot! so I put Yugo Wooden on it & hardly ever https://zastava-m90-for-sale74061.blog5star.com/21004122/zastava-m90-5-56-ak-an-overview