WHAT DOES 18.5″ BARREL MEAN?

After the war, the bayonet lug was included to numerous M1 carbines through the arsenal refurbishing method. By the beginning with the Korean War, the bayonet lug-Geared up M1 was standard challenge. It is now unusual to find an initial M1 carbine with no bayonet lug. The M1 carbine mounts the M4 bayonet, which was dependant on the sooner M3 battli