A pair of 5mm-compatible accessories based on weapons wielded by characters in Transformers: Earth Wars
. Includes two types of guns often (though not exclusively) used by Gunner type characters: the "kinda like G1 Prowl's gun" type used by characters like Prowl, Powerglide, First Aid, Swoop, and Fireflight, and the "revolver" type used by Sunstreaker, Jazz, Hound, Dustup, and Alpha Bravo.
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 revolver-type gun.