What do the letters "AR" stand for in the AR-15 rifle?
Per the National Shooting Sports Foundation: "The AR stands for Armalite, the company that in the 1950s developed this style of rifle, which eventually became both the military's M16 rifle and the civilian semi-automatic sporting rifle known as the AR-15, or modern sporting rifle. This civilian rifle, manufactured by many companies today, is confused with its military cousin because it looks similar. The civilian version, however, is limited to firing one round with each pull of the trigger, just as other semi-automatics operate." Media outlets, politicians, and activists have all mischaracterized these firearms as weapons of war.