The AR-10 is a lightweight, air-cooled, gas-operated semi-automatic rifle designed by Eugene Stoner in the 1950s. It was developed for military use and is chambered primarily in 7.62×51mm NATO, making it effective for long-range shooting. The rifle features a modular design, allowing for various configurations and accessories. Originally intended for the U.S. military, the AR-10 has influenced many modern rifles, including the popular AR-15. Its versatility and accuracy have made it a favorite among civilian shooters, hunters, and law enforcement agencies. The AR-10 remains a significant firearm in both military and civilian contexts.