Shinn Asuka’s ZGMF-X56S/β Sword Impulse Gundam from the Gundam Seed Destiny Anime series. Its basically the Impulse Gundam mated with the Sword Silhouette pack. Easily seen and which makes this configuration identifiable is the presence of the two anti-ship swords that hang on the back of the Impulse Gundam. With the Sword Silhouette pack, the Impulse Gundam’s phase shift armor also changes color to a dominant red.
In the movie, when the Impulse Gundam had the Sword Silhouette pack on, Shinn Asuka would usually use it to attack ships with. Jumping onto the bow of the ship then plunging the anti-ship sword onto the deck then carving the ship up causing it to sink or explode.
The Master Grade Sword Impulse Gundam is available at HWJapan and Hobby Link Japan. Check out their shop reviews here.
MG Sword Impulse Gundam Construction Manual and Color Guide was translated to English from the Japanese manual posted at Dalong.
