Carrier mirror stem

[Lynn Eades]

Ben, on page 129 of your parts book;
Carrier M.G. and Cavalry carrier used the early stem. The later stem is the same for all surviving earlier types of carriers. Bren, Scout, AOP MkII, U.C. MkI.
The Aussies were clever. They could fold theirs down.
Richard, Desmo was one of the manufacturers of the CMP or carrier rectangular mirror, but as Ron says, I don't think your arm is carrier unless it is a late type one.