Yep, it is the complete TT-16A Powered Assault Set. Took months to get the chest piece. Same graphic as the MA-53 Overwatch. I actually have two of those cartel chests on my companions for the matching scheme
The TT-16a Powered Assault set and the RD-17a Phalanx set are visually completely identical, except for the shade of green. The RD-17a set is a LOT brighter. I'm gathering all of the pieces of the TT-16a set right now, to start putting mods in it for Elara, just because she's the one who spends the most time out with my Vanguard lately.