Already been answered here, but yes, they were making them, and they were a OEM bullet for Chey-Tac. Don't know if they ever decided to "green box" them or not, but a simple phone call should get the answer right from the source. Call 888-223-3006 and ask for Matt Reams; he'll know, and will be able to tell you what might come down in the future with these.
Kevin Thomas