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Anyone knows of any 3rd party sellers or other way to get plasma weapons that look like the 90s plasma?

Like the plasma gun the guy on the right has:

http://www.bitzbox.co.uk/product_info.php/horus-heresy-mkiii-tactical-squad-plasmagun-p-7405

Is this close enough?

Sculpt your own then clone them via blue-stuff.

Found it... :
https://www.e-figures.com/blog/?p=793

For use to make your own from what you have, and have tried all other options

The plasma guns from the Betrayal at Calth set are closer to that style.

Thanks guys, I think I will go for the legion plasma guns.