I see in the new codex that DA get a pistol (and frag and krak) included in their stat line in addition to any other weapon they're carrying e.g bolter, lascannon etc.
Vanilla marines only get pistiols and cc if swapped for a bolter / other weapon
Do you think that DA could then shoot this pistol rather than the bolter prior to assaulting thus getting round the old can't rapidfire and assault rule