I was going to ask a while ago if different pieces of orange armor with the same level (light/medium/heavy/adaptive) but identical armoring, mods, enchancements, and augments ended up with the same stats -- but, looking at earlier threads, it appears they do. Not only that, but they'll have the same stats as purple upgradable items if you put in enough purple mods. Which is nice -- my Sith Warrior can choose her hats based primarily on how they look now.
Does the same apply for ranged weapons, though? Or do different models have inherently different tech power? None of the mods I add to a ranged weapon have bonuses to tech power explicitly listed.