I just read a pretty in depth article on these which I found in an internet search after I posted this, and it seems as though the USAF has been buying and issuing these since 1959.

And my fix of chamferring the chamber is a fairly common remedy for one that is not 100% reliable.

I was wrong about the year of manufacure for mine, also. Survival arms made mine in the early 90's. This would fit in with the original owners years of military service. Fits well with my "OOPS! looky what fell into my dufflebag!" theory smile

LOVE God, LOVE your family, LOVE your country, LIKE guns and sports.

About 2016 team "R" candidates "We definitely need a crew with a sack of balls the size of hot water bottles, bloviated estrogen leaking feel-gooders need not apply." Gunner 500