The MBF-P03 Astray Blue Frame was one of five identical prototype combat mobile suits developed using stolen data from the Earth Alliance's G Project and was designated for testing optional equipment. Its computer contains data and blueprints for various optional equipment. Most of the technology from the G Project was successfully copied with the exception of Phase Shift armor. In its place the Astrays' designers made the machines out of a lighter foaming metal compound and were built with minimal armor over the frame. This made the Astray mobile suits lighter and faster than their G Project counterparts.
Originally, the Astray Blue Frame was armed with the standard armament of the other prototype Astray suits. These weapons include two head-mounted "Igelstellung" 75mm multi-barrel CIWS, two back-mounted beam sabers for close combat, a Type 71 beam rifle, and a single physical shield. However its mercenary pilot used his resources to outfit the Astray Blue Frame with a wide variety of equipment to suit multiple combat situations and to meet the needs of different mission.