It seems like the barrel band for Kral NP03 is not sold anywhere. There is barrel band product on Pyramyd Air:
But It says it doesnt fit NP03. Would anyone know where I can get one? I was going to 3D Print it, but it is better to purchase one that is of higher quality.

Kral Barrel Band for Shrouded Models, Black | Pyramyd AIR
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But It says it doesnt fit NP03. Would anyone know where I can get one? I was going to 3D Print it, but it is better to purchase one that is of higher quality.