The first Army issued weapon I found myself behind was an M16A1 that was made by Hydramatic - a division of General Motors. It was 1986 and I was in Basic Training. Everyone else in my platoon had a Colt M16A1 and I didn't. I was jealous. Many had almost new M16A1's and I had some old clunky Vietnam era rifle. I was jealous until many of the newer ones began to break and my old dinosaur kept on trucking.
Over the next fourteen years I used many different firearms, but I have always remembered that old Hydramatic M16A1. It was probably sold to some friendly dictatorship a few years later or cannibalized and the remainder crushed, but I'll always have a soft spot in my heart for that "clunker".
Those who beat their swords into plowshares usually end up plowing for those who didn't. Ben Franklin