Star Wars X-Wing (2nd Ed): Z-95-AF4 Headhunter Expansion Pack - Rules of Play says:

The Z-95 Headhunter's wide production saw it scattered to the far corners of the galaxy. Now, this reliable, easy-to-acquire starfighter is integral to numerous criminal cartel fleets—from large operations like Black Sun to small-time raiders like the Binayre Pirates. Armed with missiles and illicit technologies, a single Z-95-AF4 can be a danger, but a swarm can be devastating. Now, you have the chance to continue growing your Scum and Villainy squadrons with these inexpensive fighters. The Z-95-AF4 Headhunter Expansion Pack includes everything you need to add one Z-95-AF4 Headhunter ship to your squadron, including a miniature with a stunning new paint scheme, four ship cards, five upgrade cards, and a handful of tokens.