You can get Adaptive Gear from the Adaptive Gear Vendor in the Republic Fleet. I find the Adaptive Gears very useful, you just simply upgrade the Mods of the gear as you level up.
So here’s a screen-shots of how your Female Commando and companions would look like wearing the RD-17A Phalanx Armor Set.
Aric Jorgan wearing a RD17-A Phalanx Armor Set
Elara Dorne wearing a RD-17A Phalanx Armor Set
Tanno Vik in RD-17A Phalanx
I bought the entire set for all of my companions except for M1-4X and Yuun.
During this post I haven’t completed the quest to recruit Yuun.