Funny, I just posted earlier how I prefer the material on the Plasma Pistol from the 2025 build
The iridescent blue-purple color shift is more easily visible in first person in that version, at least from the angle seen in this specific comparison
That said a lot of iridescent effects are seen in the current build on the Banshee, Ghost, Hunters, Elites, the Plasma Rifle etc from specific angles, so I'm sure the Plasma Pistol has it too still from the right ones, I just hope it's visible in the first person viewmodel