Regarded as the most successful firearms designer of the 20th century, Eugene Stoner was the chief engineer for Arma-Lite that designed the AR-15 rifle that would be adopted by the US military as the M16.  The select-fire, gas-operated, high capacity magazine-fed, straight-recoil, lightweight, rotating bolt design was a revolution.  Every Joe Wall piece in the AR line of products is serialized with the prefix “ES”  in honor of his ingenuity.