For a NPC successful trick attack do you add the full CR to the the damage roll or just half of it like a player would for the specialization from weapon?
NPCs always add full CR to damage. You'll see this with all the stat blocks involving small arms - they add full CR, not half.
Ya that’s how I’ve played it and read it as. However there is a lot of little nuances and hidden rules here and there regarding things so just making sure.