It's a detail, but according to Kliment/Francev, OA vz.27 armoured car had "much improved fire efficiency" comparing to previous model, "due to the use of spotting scopes on the machine guns". So maybe it's worth FC=1, like eg. Polish TK-S tankette with a scoped MG.
I promise, this time that's all
A couple of pictures attached, including typical CS tractor Praga IV.