Following the war, the bayonet lug was added to many M1 carbines in the course of the arsenal refurbishing method. By the beginning of the Korean War, the bayonet lug-Geared up M1 was standard problem. It is now scarce to find an initial M1 carbine with no bayonet lug. The M1 carbine mounts the M4 bayonet, which was dependant on the sooner M3 preve