I was trained on the M-14 and used one in my first deployment. I thought it was a great rifle. Very accurate and powerful. Sometime before we had a demonstration of the M-16 including how devastating the wounds are. Before I went to Nam I had a training course and qualification on the M-16. i was very impressed with how light and handy it was and the accuracy was awesome. The range was shorter, only out to 400 meters but Expert was easy with it. I had no problems in Nam with it. Years later I thought it would be great for deer but not legal. I tried using SKS's and AK , 30-30's and other guns for my kids to hunt with. Not ideal. Years later after I broke my shoulder I ran across an AR at a gun show at a decent price. They were then legal for deer and I needed something soft shooting for deer. I had my doubts but I shot a huge 14 pt buck. He went about 30-40 yards and collapsed dead. His lungs heart and everything in his chest was a bloody soup. I was very impressed. Eventually I settled on a Tikka bolt action in 7-08 as my favorite rifle. But an AR is plenty capable and fun to shoot. They do multiply. My grandson's first deer rifle was an AR.