After the war, the bayonet lug was additional to numerous M1 carbines throughout the arsenal refurbishing process. By the beginning of the Korean War, the bayonet lug-Geared up M1 was standard challenge. It's now unusual to find an primary M1 carbine with no bayonet lug. The M1 carbine mounts the M4 bayonet, which was according to the sooner M3 com