Im looking to make a gang of communist outcasts does anyone have any idea of parts to use my outcasts to seem more on theme or good kits to use for my champions I've decided to arm them with a grenade launcher and combat shot gun respectively

Don't forget to have a leader (and a couple of champions) that are far better dressed, armed and fed than the rest.
Not sure what would set them aside as specifically communists though.
That's actually a really good idea the arm bands shouldn't be hard to make eitherSome kind of cloth tied round the arm is often used by freedom fighter types as identification. Easy done with greenstuff on any armed civilian type models.
Don't forget to have a leader (and a couple of champions) that are far better dressed, armed and fed than the rest.
More like a noble gotten access to old texts on old terran philosophy and learning empathy for the peons which gets her booted from her house but I'm thinking of having one of my champions be the commisar typein Necromunda; a guilder? a self styled people's commissar?