Bustin' a few caps 4 ya semi-auto style. There is a reason that the AR-15 assault rifle is the weapon of choice for many gun owners worldwide. It's one badass gun!
The AR-15 and the M-16 have the same caliber and everything else is the same except for the receiver and the internal parts of the receiver; connector, disconnector, bolt, etc. The AR-15 is the civilian version and the M-16 is the military version. The AR is semi-auto and the M-16 is semi-auto, 3 shot burst and full auto. The statements above are from a weapons trainer.
