This is a Bandai HG 1/144 Iron-Blooded Orphan Astaroth Origin Gundam [5055464]

Part of a side story to the Iron-Blooded Orphans story line this mean looking Astoroth Origin kit comes molded in the deep red color and features a transformation ability from robot mode to a flight mode. For weapons it comes with the Ganma Nanoliminate Sword, Sledgehammer, and Shotgun with all three combining into one unit.