Several stories have been posted recently about the Stoner rifles. Here's a little more info:
Eugene Stoner developed this rifle, and it had several variations. Most notably, the M16. He was the father of the M16. To fully understand the development and Vietnam problems with the M16, read the book "The Black Rifle", it's very informative. I met him once while working for Colt Firearms in the early 90's. He was also a WWII USMC Veteran.
USMC '66 – '69
RVN '67 – '69
Get a hardcover copy at "The Black Rifle".