The rear reverse seat wasn’t placed there for an MG, however in the latter years of the war, it may have been utilised as an ant-aircraft spotting seat, there again just because I haven’t seen any photos of an MG mounted on the rear, doesn’t mean it didn’t happen. All the photos I have seen, show MG34’s deployed on AA tripods around the unit, to add to this, memoirs talk of soldier abandoning the vehicles for the nearest ditch with their rifle.
It was originally intended as Adrian quite rightly says, for making sure the towed unit wasn’t lost, or tipped over whist in transit.
Here's a nice photo of it from Vinces Gallery
As you can see no post was fitted for an MG as standard
Paul
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