All firing models within 12" fire two shots. No choice in the matter. Besides Im pretty sure that the devs cleared this up at some point in time in WD somewhere. The way I look at it is that I may shoot once to the maximum range or I can rapid fire (hence my weapon being called a Rapid Fire weapon).BGB FAQ Errata said:Q. When a stationary firing unit targets an enemy unit
and only some of the firing unit’s rapid fire weapons fall
in the 12" range, what happens?
A. Solve them separately, as above. All firing models
within 12" fire two shots (these shots can only hit
members of the target unit within 12"). The firing models
outside 12" fire a single shot (these can hit all members
of the target unit within 24").
That would mean your units must fire and have no choice in the matter, the can is to denote you can fire twice or not at all.If the rules required you to fire twice within 12" it would say MUST as opposed to can.