It might be or not. The first Mk. 1A handed over to army definitely doesn't have any such box
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But this is possibly not the final product. The right side of the turret houses either an IR counter measure or guidance for CLGM. Instead of front it's actually fitted to top of the turret. Still I'm doubtful of the latter as COAPS itself can guide it.
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If this be the guidance , then the gunner can fire a missile and then independently fire another anti-tank round while commander can independently go in hunter-killer mode!
By the way, this is third such model. Another such scaled model would showcase something attached in the front instead of top, exactly the same position the box can be seen .
I still believe there could be some modifications yet, otherwise clean ERA mounted version as here we can see.
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