DM 1/100 Tallgeese III Part 03

Continuing with the build of the Tallgeese I've put the arms together and find myself a bit surprised but the design. Considering my mental image of the Tallgeese 3, I expected the arms to be a little beefier inside but they are weirdly slim as shown on the picture below

Then I thought, oh it will help with the overall articulation since the arm is a little round like a Zaku's so it has the regal-ness of a knight in his armor. To my utter despair its articulation stops at 90 degrees instead of a 180 degrees. Well that's ok. It just leaves plenty of room for modelers to modify the outer shell armor and the arm skeleton for that 180 degrees that's probably unnecessary.