Image: Wikimedia CommonsThe “M1 Carbine” was instead the first carbine to be developed and thus while it does have similarities, these are in fact different weapons.Here's What You Need to Remember: The confusion between the two weapons isn’t helped by the fact that both are designated as firing “.30 caliber.”Despite its name and the fact that its basic appearance is similar to the M1 Garand, the M1 Carbine—officially the United States Carbine, Caliber .30, M1—wasn’t really a carbine version of the main battle rifle. The confusion lies in the fact that both were designated “M1” but that simply dates back...