I spent two months shy of 4 years in the army from 1965 to 1969 first as enlisted and then as an officer. I had one partial tour in Nam where I was wounded and set home to recover after 4 months. I was qualified with most infantry weapons and used a CAR-15 (Colt Automatic Rifle-15) in Vietnam which was a short barrel version of the M16 riffle. The more modern version of that rifle line is the M4 and a civilian look alike is commonly referred to as the AR-15 Assault rifle. The civilian AR-15 cannot fire full auto even with a “bump stock” add on, it still requires a separate trigger pull for each round fired. In Vietnam on patrol I never fired my CAR-15 on full auto; it’s a waste of ammo in most cases. In the jungle often with no communications you didn’t waste your ammo.
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