The Uralmash turret shown is armed with the 76mm gun not the 85, no bulge in the 76 . But I know your problem , so many variants and factory changes during production makes it hard to figure out . Not to mention , the 85 was manufactured well into the 60s in Poland and the Czech Republic , and they had their own versions ! It is a great book , a bit pricey ( $100) but IMO , if you like to build lots of different versions of the same tank and I do , its perfect . Just the turret cast patterns alone could give you over half a dozen 85 versions , all really easy to do with green stuff and plastic strip . What version are you looking for , I could post a picture or two