Don,
This site should help and will answer the ADF Abrams armor issue as well in the article plus it seems that in the countries using the tank the requests as alluded to already are to fully meet the USA standard for the variants in use with the USA. Here's the email addy that will directly take you to the article
http://www.army-technology.com/projects/abrams/ I have found this site and one other VERY useful for my MRAP and APC threads because they are industry linked and they want you to know who they're doing this and that for. Hope it helps.
Regards,
Pat