MSZ-006R Zeta Plus R

The MSZ-006R Z Plus R is a upgraded variant of the MSZ-006C1 Zeta Plus C1, Featured in Gundam Sentinel.

History
Despite the high performance of the transformable mobile suits introduced during the Gryps Conflict, their complexity and high cost prove to be serious problems. As part of its research into lower-cost transformable mobile suits, Anaheim Electronics develops a new version of the Zeta Plus which docks with a sub flight system known as the Back Weapon System (BWS). This system provides the mobile suit with additional weapons storage as well as flight capabilities. This prototype machine is based on the MSZ-006C1 Zeta Plus C1, and the data obtained from it is later used to develop the RGZ-91 Re-GZ.