[SG2] Range Bands for Support Weapons on Vehicles

What does everyone use as the range band size for vehicle-mounted
support weapons, such as a SAW mounted on a tank or an AGL on an APC?

I went through the rules. This is a hole in the rules. It says that support
weapons use should use the quality die of the squad firing it, but this isn't
a squad firing it, it's a vehicle's crew (page 33).

The rules say that heavy weapons use range bands of 12", but these are
infantry support weapons, not heavy weapons (page 37, with definition of a
heavy weapon on page 29).

It goes on to say that multipliers to the range band (i.e. 12" x the size
class of the point target) are not for MAN-CARRIED and manually fired
weapons (emphasis from the rulebook). This implies that there's a difference
between a
man-carried and manually fired weapon and one mounted on a vehicle (page
37).
These weapons are not man-carried, though they may be manually fired.

So, what is it? Do vehicle mounted infantry support weapons have 12" range
bands ala class 1 weapons, or do they have the same range bands (based on
quality) that their counterparts in a squad have?

I'm leaning towards quality die based range bands, but I'm curious how others
handle this (and whether anyone has found a rule in the book to cover this).