"By your reasoning, there would also be no need for it to have Note Q. So, either the counter is wrong, or Note 76 and the Vehicle Listing is wrong."
In this vehicles case note Q may only be explaining the date of availabilty for the CMG. Note Q explains that there is an optional 4FP CMG available from 9/44 onwards, and that it may only fire within the VCA. The vehicle is missing the "MG:VCA Only" but I fail to see it being absolutely necessary. As I said before the MA is NT and not AA, as such the only direction the CMG could fire would be within the VCA. The only reason that I can think of for the 'caution' about the usage of this CMG is because the vehicle is OT and they want to avoid the CMG being used an an AA weapon. Many open top vehicles have CMGs that can be used as AA weapons (ie, the US M15A1 MGMC, US veh note 37) but these are usually on turreted AA AFVs.
Other applications of note Q are The StuG IIIG(L)(note 35), StuH 42(L)(note 35), which adds an AAMG and CMG both restricted to the VCA. The SPW 250/8 and SPW 251/9 (note 60 and 64), also has note Q and here, again, the vehicles are both OT and NT.
Therefore, members of the jury, I submit, in summation that it (note Q) is there as a 'caution' against use as an AA weapon. It may seem obvious to the more experienced player but could possibly help prevent newer players from making the error.
Good Lord,...would you look how wordy this became. Pardon my babbling. :hush: