An AR-15 is a semi-automatic or self-loading rifle that has been called "America's rifle" by the NRA with well over 15 million sold by 2019. An AR-15 is not a specific model, but a style.

The U.S. Bureau of Alcohol, Tobacco, Firearms and Explosives classifies the SKS rifle that some sources believe Micah Johnson used to kill five Dallas police officers on July 7 a "Curio or Relic ...

SKS-type rifles are semiautomatic weapons that chamber 7.62mm rounds, a higher caliber than is most often used by AR-style rifles. They are patterned off a design that originated in the Soviet ...