Here's an example currently offered for sale.
https://www.gunbroker.com/item/854312708
The Zastava M70 action has never, and I emphasize never, had a thumb cutout for a stripper clip feed for the internal magazine. However, the Zastava M48 action used in the Zastava M48 military design rifle, and the commercial Zastava M98 rifle (do not equate = military rifle) has always had that cutout, and was as-manufactured only chambered for the 8X57mmJS cartridge. These receivers devoid of stampings are designated M48BO when installed in military rifles. This has been colloquially named the Yugoslavian Intermediate Mauser action. Things like one piece scope bases for a commercial FN Mauser action, and the Zastava M70 bolt action, will not fit on a similarly D&T M48/M98 action. Also, the floorplate for this intermediate action is typically fixed, and can be either milled production as this rifle has, or stamped production. These actions will accomodate the X57mm rimless cartridge family chamberings and .308 Winchester cartridge chamberings, but not .30-06 Springfield cartridge chamberings nor X64mm catridge chamberings.
Having said that, this rifle is a bit of a commercial / civilian Frankenmauser as a M70 style side safety and smooth bolt cover as used on the M70 action have been installed, replacing the M48/M98 bolt cover with more typical Mauser style wing safety. So it's not "exactly" a Zastava commercial / civilian M98 rifle. But it is in no way a Zastava M70 rifle.
Mauser also manufactured commercial / civilian rifles using such actions with thumb cutout on the receiver for stripper clip loading of the internal magazine. Here's an example of such a commercial Mauser action.
https://www.gunbroker.com/item/855068428
Mauser clearly manufactured the action, but the barrel, stock, and highly probable the two trigger set system components and safety were manufactured by Zastava. There is absolutely no way I can see this rifle being designated a Zastava model anything personally. It's someone's buildnusing a commercial Mauser action and Zastava components.
I sent a note to this seller, who I purchased two honest Zastava M70 7X64mm Brenneke rifles from, regarding the description of the first linked rifle and trying to help clarify for potential other customers, and received a response telling me to go pound sand in tone.
"Hello,
When we received these rifles in they are all marked M70 Standard by the importer. All calibers we have sold have been in the sizes you mentioned and the Screw Spacing measures 7.835" with a Magazine Box Length Internals at 3.375”. I apologize for any confusion but we did our best to sell these rifle exactly as they were described to us and as their website still describes that model."
Which absolutely is far less than accurate as the M70 is and always has been described as having a hinged magazine floorplate at minimum. I plan to ask which of the two fixed magazine floorplate screws at the front of this magazine was used when this measurement was taken, pointing out the M70 hinged magazine floorplate has only one retaining screw at the front, and see where this discussion goes FWIW. It seems clear to me the two screws in the front of the fixed magazine floorplate is an artifice from shoehorning the M48/M98 action into a stock designed for a M70 action.
What I read between the lines of the response is "All we want from buyers of these rifles is a winning bid, prompt payment, and prompt receipt of a copy of the purchaser's receiving transfer dealer's FFL. We don't really care if a customer doesn't actually receive what the listing advertises. That's their problem if they didn't do their appropriate tesearch including asking questions we'd rather not accurately answer even if provided with better information. We don't care if the importer was a robo-stamper, not our issue."
For reference, here's listings that the photos actually depict as meeting the definition of a Zastava LK M70 bolt action rifle, from this seller (showing they have their own means to know better).
Pre-owned, among the same other rifles in the crates purchased by this seller
https://www.gunbroker.com/item/853506151
Brand new imported by the current exclusive US importer of current production Zastava commercial / civilian firearms (Zastava Arms USA). "American" designates a rifle of this model manufactured without installing iron sights.
https://www.gunbroker.com/item/855516964