After the war, the bayonet lug was added to several M1 carbines in the arsenal refurbishing procedure. By the beginning of your Korean War, the bayonet lug-equipped M1 was standard issue. It's now uncommon to find an first M1 carbine with no bayonet lug. The M1 carbine mounts the M4 bayonet, which was dependant on the earlier M3 combating knife and… Read More