Here's a list of the parts used, and INCOM-not bad guesses! You know me too well, I'll have to mix things up for you

Head- potf2 DS Trooper retooled to fit onto a ball joint post, resculpted chin an d cheeks, sanded off the sculpted chin strap, and soft goods band around back of ear muffs
Body-ROTS Tarkin (of course)
Arms-Saga Derlin
Gloves-Saga Derlin
Helmet-origonal potf2 helmet with custom snug fit strap
custom soft goods holster and belt combo like the rest of the ROTE set