HA BB with full right arm, modified forearms/doors. I wanted to have a completely regular right arm so I replaced it from the elbow down (still fully transformable). I also removed the little headrest type thing on the right arm. Update- I finished the arm/seat mod. I took the second passenger seat (which very closely resembles the arm guards on the CGI model) from my parts HA BB, removed the weird headrest thing and added it to the left arm. Then I removed the lower door pieces that were attached to the arms (the pieces that stored the missiles) and attached them to the doors. They can swivel up so they are not seen in Robot mode and swivel down for Alt mode. The mod took a little over an hour to do using needle nose pliers, Superglue and an X-acto knife. This mod really cleans up the arms and keeps the door/wings looking thinner.