The AR 15 was made for the military to have a light gun out on field.The AR-15 is based on the 7.62 mm AR-10 designed by Eugene Stoner, Robert Fremont, and L. James Sullivan of the Fairchild armalite corporation. The AR-15 was developed as a lighter, 5.56 mm version of the AR-10.
The Ar-15 is a good house weapon because its semi auto and is strong, good at close and far range,very light, and is all the way around a good gun.