WHAT DOES 18.5″ BARREL MEAN?

Once the war, the bayonet lug was added to several M1 carbines in the course of the arsenal refurbishing system. By the beginning with the Korean War, the bayonet lug-Outfitted M1 was standard situation. It is now rare to find an primary M1 carbine without the bayonet lug. The M1 carbine mounts the M4 bayonet, which was based upon the sooner M3 pre