The world of AR-platform rifles continues to steadily expand. You can get an AR in almost any caliber, from .22 LR up through some elephant-stompers. I own a few, ranging in caliber from .22 up through .450 Bushmaster. Some other caliber ARs I own include one 9mm, a couple of .223/5.56mms and one 7.62×39. I’ve taken deer with the 7.62, and my son used the .450 during deer season. They are certainly very useful firearms.
