While I fired just about every small arm in the aresenal while I was in the army, I spent most of my time armed with the M-16. My first tour in Hawaii I carried the M-16A1. My next duty station, Germany had the M-16A2. When I transferred to Ft. Carson, CO, my unit still had A1s, but reequipped with A2s before I had a chance to shoot one again.
I also had a chance to fire the M-4 Carbine, which is basically a cut down M-16A2. I shot the “vanilla” model and not the “Gucci” version with the fancy sights and the rail system.
For a brief period of time, I was also lucky to carry and shoot the M-21 sniper rifle. I never went to sniper school, and wasn’t a particulary good shot, but greatly enjoyed this fine weapon.
Oddly enough, the first military weapon I fired was the M-14, which I had a chance to shoot in high school. A few of us at JROTC were invited to the range at the nearby Naval Air Station and shot the M-14, M-16, and the M-60. Not a bad way to spend a school day.
So the question is, which is your favorite rifle? Be creative, don’t limit yourself to US weapons.
Update: I should note, this doesn’t include civilian or foreign weapons that I shot. Lots and lots of those. But you are welcome to opine away.