User talk:2600:100B:B014:AA4:D8AA:9C2E:E7D:FEEA

It's not actually a bayonet, its a knife (specifically a dagger). A bayonet is specifically the combination of a firearm with a knife affixed to the barrel. Seperately they are just a rifle and a knife. Bayonets are considered a class 3 weapon, requiring a Federal Firearms License in the U.S., however, both the M7 knife and the rifle are otherwise legal to own as long as they are not joined.