I'm actually building a H20-ish version of the Supernova based on the 20155 (ghost ring, comfort stock, traditional stock).
My 20155 is currently at Robar (based in Phoenix, AZ)
I'm having them do their NP3 finish on the Supernova.
My shotgun build also includes a total NP3 coating on the +2 Nordic Components mag extension, and mag extension clamp.
I really wanted this build to stand out, but sadly I couldn't afford the NP3+.
Not a deal breaker though. The shotgun will look awsome, and will last forever. I'll never sell it.
I'll post a pic when i get it back from Robar. (I can't wait!!!)
I should get it back early August.