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M-1921 Stiletto Bayonet
Basic Information

The unofficial Stiletto designation for the M-1921 Bayonet was given by collectors to this experimental bayonet produced at the Springfield Armory. Judging from armory production records, 4 were produced in 1920, 20 were made in 1921, and 51 were made in 1922. All observed ones have been dated 1921 and do not have serial numbers. The bayonet was not recommended for adoption in February 1923.
 

M-1921 Basic Data
Blade Length: 8.5 inches Overall Length: 12.3 inches
Blade Width: 1.0625 inches Blade Thickness: 0.225 inches
Scabbards: There are two observed scabbards. One is similar to the M-1910 Canvas Covered scabbard for the M-1905 bayonet, only shorter. It was made at Rock Island Arsenal and dated 1921. The other is reinforced plastic in olive drab, similar to the M-3 or M-7 scabbards, only shorter.