source: http://www.astrays.net/destiny_astray/astray_b_ms.html
First seen in Gundam Seed Destiny Astrays B
Produced in the Ame-no-Mihashira's factory by Gai, the Astray Blue Frame D is a close combat variant of both the Blue Frame Second L and Astray Blue Frame Second G created to counter Dante Gordigiani's MBF-P0X Gundam Astray Noir. Some of the Blue Frame Second L/G's parts are replaced with those of the original Blue Frame, while the head and shoulders are completely new parts. It also lacks the tactical arms, as it is replaced with a modified AQM/E-X01 Aile Striker. The suit is armed with various blade-like weapons, and is designed to get close to the enemy using the powerful output from the modified Aile Striker and then engaged in close combat using its various blades. - gundam wikia
