M8A1 bayonet scabbards. This is the scabbard for the World War II trench knife M3, the carbine bayonet M4, the M1 rifle bayonet M5 and M5 A1, the M 14 bayonet M6, and the M-16 bayonet M7. Any of these bayonets will fit in this scabbard. The scabbards are in very good condition. While originally US production it is possible that these particular scabbards have been rebuilt. The exact scabbard is described in Cunningham’s excellent book “US KNIFE BAYONETS AND SCABBARDS” on page 101.