The old AR15.Com had a menu option to view and/or download the military Tech Manual (TM) on the M16. This was very helpful to me and seemed to frequently provide a reference point to new owners of the AR 15 precluding many of the very basic questions often asked in these forums.

Additionally, the old site had a photo essay on how to tell the difference between AR15 parts and M16 parts. This was a very useful feature as I am sure it has helped many stay on the legal side of the law.

I would strongly consider bringing these features back.

Thanks