Game Description from the publisher:

The B-Wing Expansion Pack allows you to equip any of its four ship cards with an impressive array of upgrades. Each B-wing can be outfitted with a system upgrade, a cannon, and up to two torpedoes, including the hard-hitting Advanced Proton Torpedoes. These short-range torpedoes can only fire at enemies within Range 1, but with its five shields and ability to barrel roll, the B-wing is built to get up close and personal in even the thickest of combats.