The M5 bayonet has a 6¾ inch blade, and overall length is 11½ inches. Weight is 11½ ounces. The blade has one side sharpened for its full length and three inches of the other side are sharpened. There is a relatively large push button release to deal with removal while wearing gloves.
The stud on the bayonet crossguard fits the gas cylinder lock screw under the M1 barrel. Locking grooves attach to the bayonet lug on the rifle. The M5 fits only the M1 and does not interchange with any other firearms.
Before ordering this item check with state and local laws regarding possession.