Imp, the variants are modeled. The MKVIb vickers light tank is modeled as is the MkVIc. they have disparate armament. I'm just pointing out the discrepancy between what is stated and what is in fact reality.
If you're reverenceing my point on the Humber SC, I was observing that in that particular case it is somewhat hard to pin down a correct armament. When I get a look at the stowage diagrams for the MkI and MkII and delve more deeply into one, I'll know more for sure. Either way, I'm not proposing representing all visible examples of Humber Scout's with 1/2 Brens or Vickers K-guns.
Suffice to say, while say Dingo's had other alternative armaments, a Bren is correct and proper. (15 Recce apparently had a Dingo armed with 2 Vickers K guns. I have no idea how they stowed the magazines as the 100 round drums don't easily fit anywhere and you more or less have to either rig a stowage bin up in place of the 30 round magazine storage at observers knees or hold them in your lap. The crew space on a
dingo is NOT very spacious. (That's my former scout car btw).
All also note, that form a cursory glance, the Bow MG's have shorter range, most likely due to the presumption of a lower position and due to the limitations of the mount. The Coax MGs have the more extended ranges as the gunner has more freedom of traverse presumably.
There is also a gross difference between a Vickers firing .303 MKVIII BLTZ and a .50 vickers firing 12.7x81 SAP rounds.
Please, note, I'm not trying to pee in anyone's porridge here. I'm just providing some details that I am either intimately familiar with or at least familiar with in the first person from looking at details while trying to find parts that are common between various british AFV's for the purposes of restoration of my own vehicles. I could barely tell you what was in a certain Ausf of Panzer III, with British AFV's I'm more familiar.