AR-15 style rifle

An AR-15 style rifle is any light semi-automatic rifle inspired by the Colt AR-15 design. The "AR" in AR-15 stands for "ArmaLite Rifle", not "assault rifle".
The Federal Assault Weapons Ban made it harder for the sale of the Colt AR-15 and some versions of them in the United States from 1994 to 2004, although it did not affect rifles with fewer listed features.