Is the AR-15 Rimfire or Centerfire? A simple explanation
In 1956, the AR-15 was designed by a team of engineers led by the late Eugene Stoner. It was a downsized variant of the AR-10, which had been previously submitted for military trials. The AR-15, for most of its life, has been chambered in either the .223 Remington or 5.56x45mm. The AR-15 was designed to…