The second wave of Harook figures have been released by Mad Robot Miniatures. From their blog:
We are happy to announce the release of the second wave of releases for our 15mm aliens...The Harook.3 new sets are being offered: 2 Plasma Gunners, 2 SAW Gunners and a pair of Snipers with a Targeting Drone. Each will be sold separately so Harook players and collectors can customize their forces as they wish.
All three packs are available here on Mad Robot Miniatures' webstore. And you can see Spacejacker's post about painting these bad birds over on Tiny Solitary Soldiers.