Yes, I hear the new Sfx Mete has threaded barrel, nickel plated internal parts, magazine funnel, comes with one 18 and two 20 magazines, extended slide release, just to name a few improvements. Exciting.
Why not buy an SFx? It comes with all 4 plates (in black) and is also a very nice Canik. I hope you hear back from them soon if this is not an option. Good luck.
Decided on FDE SFx/Viper after much research. Added Executive after 1500 124gr worked flawlessly in first Canik. Couldnt be happier, both are a joy. Viper not so much.
Thanks for letting me be part of the community. I'm a happy Canfan!