***I never much cared for them, prefer an M1 or M14.***
If Winchester had gotten the contract instead of COLT, back in the 1960s, the 5.56 mm it would look like a M1 carbine.
Spent all day yesterday and part of the previous evening shooting a new AR15. Our purpose was zeroing, and that was totally smooth at both 25 and 100 yards. We used both the .223 it is bored for and the alternate chamber that will fire the .22LR.
There was no "full auto" selection, only "safe" and "fire". One round was all one could get out of one trigger pull.
It would be great for coyotes and other varmints, and there is no deer gun season in Ohio except for shotguns and muzzle-loaders. All of us shooting were within a 5 inch circle after it was zeroed, so it would be an ideal varmint rifle.
Surprisingly, not one of us decided to commit mass homicide. /sarcasm