A pair of 5mm-compatible accessories based on weapons wielded by characters in
Transformers: Earth Wars. Includes the "kinda like Thrilling 30 Jetfire's gun" type used by Jetfire, Ironhide, and Air Raid, and the "rocket launcher" type used by Seaspray and Sludge.
3mm versions for Legion/Commander/Energon Igniter class Transformers are available
here.
Prize Inside, a seller I highly recommend, has
an alternate, somewhat fancier take on the rocket launcher.