I used the Gundam Base HG Gouf Flight Type as a starting point, replacing the arms with spare Gouf Custom arms, and built it based on Norris's second unit!
I never thought the entire arm would be included (　ﾟдﾟ)
I made the color match exactly to make it a Gouf Custom! The actual color is a darker blue, but this is a pretty bright color that looks more custom-like (^◇^;)
Modifications: ・Changed the antenna to Builders Parts. ・Made the right shoulder spikeless and attached a cover. ・Made the spike on the left shoulder a little larger with putty. ・Extended the wings with putty and cut off the antenna from the Builders Parts to add detail.

Gouf Custom Zwei | うま's Gunpla works