WThe M4 bayonet was introduced in 1944 for use with the M1 carbine. It was built on the M3 fighting knife.
WThe M5 Bayonet was adopted by the U.S. military in 1953 to replace other bayonets for the M1 Garand rifle. It uses the M8A1 scabbard.
WThe M6 Bayonet is a bayonet used by the U.S. military for the M14 rifle, it can also be used with the Mk 14 Enhanced Battle Rifle as well M39 Enhanced Marksman Rifle. It was introduced in 1957, at the same time as the rifle itself. It is the only bayonet made for the M14.
WThe M7 bayonet is a bayonet that was used by the U.S. military for the M16 rifle, it can also be used with the M4 carbine as well as many other assault rifles, carbines and combat shotguns. It can be used as a fighting knife and utility tool. It was introduced in 1964, when the M16 rifle entered service during the Vietnam War.
WThe M9 Bayonet, officially known as the M9 Phrobis III, is a multi-purpose knife and bayonet officially adopted in 1986 by the United States. It has a 7-inch (18 cm) blade and is issued with a sheath designed to double as a wire cutter.
WThe Model of 1905 bayonet was made for the U.S. M1903 Springfield rifle. This designation was changed to Model 1905 in 1917, and then to M1905 in 1925, when the army adopted the M designation nomenclature. The M1905 bayonet has a 16-inch (40.6 cm) steel blade and a 4-inch (10.16 cm) handle with wooden or plastic grips. The bayonet also fits the U.S. M1 Garand rifle. From 1943 to 1945, a shorter, 10-inch (25.4 cm), bladed version was produced with black or dark red molded plastic grips, and designated the M1 bayonet. A number of M1905 bayonets were recalled from service, their blades cut down, and reissued as M1 bayonets.
WThe M1917 bayonet was designed to be used with the US M1917 Enfield .30 caliber rifle, as well as with the seven different U.S. trench shotguns. The blade was 17 inches (43.2 cm) long. It will not fit the M1903 .30 caliber (Springfield) or the M1 .30 caliber (Garand) US service rifles as they have different bayonet ring (barrel) and attachment stud dimensions.
WThe OKC-3S is a bayonet developed by the United States Marine Corps to replace the M7 bayonet and M9 bayonet as its service bayonet for the M16 family of rifles and M4 series carbine. This multipurpose bayonet provides greater durability than the M7 and also functions as a fighting knife.