Not to mention a bootlegger. Here's What You Need to Remember: While the M1 Garand rifle and the Thompson submachine gun were named for their respective designers, the M1 Carbine was not named for anyone in particular. Plenty of other “M1s” —from the bazooka to steel helmet—didn’t get the “Garand” treatment, but in the case of the carbine it has lead to confusion that it was just a smaller version of the main battle rifle. However, another reason could be due to the fact that one of the weapon’s designers, David Marshall Williams—later known as “Carbine” Williams—was also a bootlegger and convicted murderer.