HK-47 bonus Mission need Help!

I have found all but one piece every time i play the game where do I get the Driod Chassis for the Hk-47 driod someone please help 😕

You get the droid chasis from defeating HK assassins halfway through the missions on Nar Shadaa. I suggest from now on you check every droid vendor and every body.

you can also purchase it on Nar Shadda if you have the money

Not to mention if you try to sell your body to the Hutts, they throw metal at you, the piece you're looking for might be one of them.