Saab 2000 Swordfish MPA does have an ASW/ASuW capability, inc sonobouys and a Selex 7500 Seaspray maritime surveillance radar. When I spoke to Saab a few weeks ago, they declined to give specifics on weaponry (though they said it is equipped to carry them) so can't really comment on the specifics of that.
The Saab 340 MSA is geared at border security and maritime surveillance, with no offensive capabilities.