The Hyde Carbine was a light rifle concept made by Hyde-Inland. The weapon was similar to that of a Thompson SMG but gas operated. Although it performed well, It was too expensive and overengineered for its type for mass production at the time. However, the second model which became the M1 Carbine

M1 Carbine

The M1 carbine is a lightweight, easy to use semi-automatic carbine that became a standard firearm for the U.S. military during World War II, the Korean War and the Vietnam War, and was produced in several variants. It was widely used by U.S...

was accepted for US Service.