OK, I have an update. My friend realizes that the original 1/14's were not chrome lined. He was just hoping to find a 1/14 in the original configuration, with chrome lining. That was a misunderstanding on my part. What he says about the 1/14 is this: The 1/14 was the original Stoner designed twist, and they seemed to know that it was just on the edge as far as stability, but when they conducted Arctic tests, he thinks in the late 50's, they found the extreme cold and air density caused severe stability problems. They then swithced to the 1/12. He says some of these 1/14's actually went to Nam with the VERY early advisers. They found out the hard way that 1/14 wasn't the ticket.
This fellow is one of my "go to guys" for AR & M16 info. I hope someone can verify this. TIA