Hi there,
im currently make a 3D model (or better i try
) of the GAU-8, but unfortuanly i didnt found that much resources so far, i also checked these board here before posting, for pictures but the most links dont work anymore 
.
(http://forum.a-10.org/topic.asp?TOPIC_ID=1447 http://www.arc2.prohosting.com/AWA/AWA http://hogpen1.tripod.com)
Also the pictures i found on the web are pretty useless
to bad that i dont live in the states and cant just go in a museum to take some shoots with my digicam .
So maybe someone have some good / detailed pictures from the Avenger
Thank you very much in advance!
Jean-Pierre