Too many times Juice. A lot of the SF guys would pack AK's and chance catching friendly fire, cuz you could pull them right out of a mud hole and they'd work. The 16 was the beginning of the 'new breed' of war rifles and they had much to learn and apply from our 'field testing'......
Any one yet tried the new Frog Lube ? LOVE it ! They send lots of it free of charge to our troops in the rock pile and our guys/gals eat it up. Do a google for 'frog Lube'.