As for the Brno, you wouldn't consider a Brno VZ24 a Mauser? Seems to me that people are arguing semantics here. I understand that there are small ring and large ring military rifles. I don't care about those, just was confused as to which bases fit the pre drilled holes on the Zastava type rifles, which apparently are a source of disagreement for some
The Brno VZ24 is a Mauser clone, not a Mauser but as you stated, it makes no difference as to your original question which was concerning a Zastava M70 which is neither.