[Military M-16s and M-4s] are fully automatic and much more powerful [than civilian AR-15s]. This is slightly misleading. The military weapons fire the same am

[Military M-16s and M-4s] are fully automatic and much more powerful [than civilian AR-15s]. This is slightly misleading. The military weapons fire the same ammunition: the same bullet, at the same velocity. In terms of kinetic energy of the bullet, the weapons have the same power. The fully-automatic capability of the military weapons simply allows many more shots to be fired in a given amount of time.