Pardon if this has been posted here before, but I have always had a fondness for the Cadillac Gage Costa Mesa made Stoner 63 Survival Carbine. Only one was made, but the original designer, Robert L. Gaddis, who may be familiar to all the Randall Knife collectors here, kept his copies of the original blueprints. When the original was destroyed by BATF back when Cadillac Gage left the firearms business, all of the parts were kept, and they were added to a post 86 receiver, which was milled to the original 1964 specs for the USAF survival rifle competition - which also included the Colt Model 07 SMG and earlier Surivival rifle, and they were compared to the M14 with a special folding metal stock and the standard M3A1 Greaser.
I will try and find the original USAF test report, which is posted online somewhere,
Here is a nice vid from Knight's Institute for Military Technology.
Enjoy........it turned a pretty sh*t day I was having into a nice one!
http://www.youtube.com/watch?v=PmlGg06OO0E