WHAT DOES 18.5″ BARREL MEAN?

After the war, the bayonet lug was extra to quite a few M1 carbines through the arsenal refurbishing approach. By the start from the Korean War, the bayonet lug-Outfitted M1 was standard challenge. It is currently uncommon to find an primary M1 carbine without the bayonet lug. The M1 carbine mounts the M4 bayonet, which was depending on the earlier