I guess the AH-1Z has been around for at least three years according to this article concerning the new TSS contract. The article indicates 16 units were delivered in 2007. Maybe time to look at the COBRA based on these last few posts, I only "report" on the info the technical stuff I trust to you guys to evaluate.
http://www.defpro.com/news/details/16198/
Regards,
Pat