Quote Originally Posted by DivisibleByZero View Post
• You retain the benefit of any features from your class, race, or other source and can use them if the new form is physically capable of doing so.
Every creature is capable of having an AC.



Quote Originally Posted by DivisibleByZero View Post
If the new form is physically capable of doing so.
The new form is certainly not made of metal and wood, so whether he is physically capable of retaining that +1AC is going to be the DM's call.
It certainly COULD be made of metal and wood. It worked for the T-800.