[rdl]

This is a great book about the AK-47, the big "alternative" to the M16: http://www.amazon.com/The-Gun-C-J-Chivers/dp/0743271734

The Author, C.J. Chivers, writes an interesting blog for the NY Times where they attempt to ID munitions from the battlefield in Africa, Syria, etc. http://cjchivers.com/