Broadside's g1 missile remade for the Titans Return version, though this missile design would be useful for any number of Transformers figures. Missile has a 5mm grip and 5mm port for use as a weapon/attachment points. There is an additional 5mm port in the thruster and two 2mm "Titan Master" ports to allow for multiple attachment points on Titans Return figures.
Pick the small option to order one missile, large for a sprued set of two.
A 5mm grip version of Broadside's axe is available here.