The M16 Rifle is the U.S. Military version of the AR-15 Rifle. Adapted for semi-automatic, three-round burst, and full-automatic fire the M16 was the United States Military's standard service rifle of the Vietnam War. Featuring art from famed firearms graphics artist, gun parts manufacturer and self-proclaimed adrenaline junkie Robert Burrows. 15oz Mug is durable, dishwasher and microwave safe.