How do you get onyx body armor in Mass Effect?

There are three main story missions that can be completed to earn the onyx body armor. The first mission is in the Omega system, where Shepard needs to find Dr. O’Loy in order to get information about Project: Shadow Broker. The second mission site is on the Citadel, where Shepard needs to head to underworld club Aveline in order to speak with Wrex about Project: Shadow Brokers.