The 'ac' code on this rifle show it to be a Walther made K43, and the scope code 'ddx' shows as being a Voigtlander und Sohn made scope, so they are the right combination of makes for a real sniper K43, as in general the Mauser made K43 snipers were all fitted with Voigtlander und Sohn scopes, whereas in general the BLM made rifles used 'dou' made scopes.
There were never "dou" coded ZF4 scopes. I assume you mean "dow".
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