Khurasan Miniatures have released the 15mm Garn Flesh Eater figures.
From their website:
Flesh Eaters wander Garn space looking for the most intense combat to be had, and are permitted to join any combat team they wish — indeed this is seen as an honour by the unit they choose to join.
These 15mm scale models are big (even for Garn), and really imposing. Although the guns were designed as a superheavy flamethrower and a heavy fusion gun, naturally you can use them for whatever you want.